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Our entire team at Gerry’s are all experienced anglers and can help you choose the correct tackle for any fishing situation. Please drop us a message or give us a call if you need any help.
You can return unused standard items within 30 days for exchange or refund.
We check our prices weekly to ensure we can combine our fabulous service with the best prices. If you find an item cheaper and in stock somewhere else, drop us a a message in the chat box and we can see what we can do.
This item is available for next day delivery. You can pick this in the checkout.
We offer free post to any mainland UK address with a basket of more than £80. We also send all over the world and the best way to find out how much postage you will pay is in our checkout. Add the items to your basket and then add your address. Our checkout will automatically calculate your total.
We have come from a tiny fishing store and grown into one of the biggest fishing tackle retailers in the UK winning countless awards over the years. We are still a family business offer fabulous service online and in-store.
Spread the cost of larger orders over 6 or 12 month 0% APR. We also offer longer terms with APR charges via V12 finance. Available in the checkout.
You can make your next purchase a little easier on the wallet by splitting the total into 3 payments by using Klarna payments in the checkout.
The Madness Madfin 6″ is a specialized, flat-sided pintail soft plastic designed for maximum mobility and visual deception. At Gerry’s Fishing, we highly recommend the Madfin for targeting “educated” predators in both salt and fresh water. Its slender, sandeel-like profile and ribbed sides allow it to glide through the water with a “bewitching” and subtle swimming action that triggers strikes even in highly pressured areas.
Constructed from a remarkably soft and flexible Japanese compound, the Madfin is engineered to react to the slightest rod tip movements. It is a “finesse” tool through and through, designed to mimic a fleeing or distressed prey fish like a sandeel, sprat, or small mullet with incredible realism.
Ribbed Flat-Sided Body: The flat sides and subtle ribbing create a unique vibrational signature and visual “flicker” that mimics the flash of a thin baitfish.
High-Mobility Tail: The fine pintail responds to the smallest water currents or rod twitches, providing a natural undulation that is far more subtle than a standard paddle tail.
Exceptional Suppleness: This is often cited as one of the softest lures on the market. This flexibility allows fish to inhale the lure with zero resistance, leading to a near-perfect hook-up rate.
Sandeel Profile: The 15cm (6-inch) length is the “magic size” for coastal bass and estuary predators, perfectly matching the silhouette of their primary prey.
| Feature | Details |
| Model | Madness Madfin 6″ |
| Length | 150mm (15cm) |
| Weight | 10g |
| Type | Finesse Pintail / Slug |
| Ideal Hook Size | 5/0 or 6/0 Owner TwistLOCK / Short Shank Jig Head |
| Target Species | Bass, Zander, Pollack, Cod, and Large Perch |
| Pack Size | 4 Pieces per pack |
The 10g weight and flexible design make it a versatile performer. The Gerry’s team suggests:
“Scratching” the Bottom: Fish it on a short-shank jig head and bounce it along the substrate. The short shank allows the body maximum freedom to move and undulate as it “scratches” through the sand or gravel.
Escaping Prey Animation: Use long, wide pulls with the rod to lift the lure through the water column, followed by a controlled fall. This mimics a baitfish attempting to flee upward to safety.
Weedless Shore Tactics: Rig it on a 5/0 weighted or unweighted offset hook (like the Owner TwistLOCK) to search through kelp gullies. Because it is a lighter lure for its size, adding a few lead wraps to the hook can help it reach the strike zone in tidal currents.
Vertical Boat Finesse: A devastating choice for pollack and zander. The subtle pintail vibrates even when the lure is held stationary in a light current, making it ideal for vertical presentations in deep water.
Gerry’s Verdict:
The Madness Madfin 6″ is a professional-grade finesse lure that prioritizes realism and mobility over aggressive vibration. It is a “bass-killer” in the summer months and a refined tool for any angler who needs to trick fish in clear water. With 4 lures per pack, it is a high-quality addition to your finesse arsenal
Our entire team at Gerry’s are all experienced anglers and can help you choose the correct tackle for any fishing situation. Please drop us a message or give us a call if you need any help.
You can return unused standard items within 30 days for exchange or refund.
We check our prices weekly to ensure we can combine our fabulous service with the best prices. If you find an item cheaper and in stock somewhere else, drop us a a message in the chat box and we can see what we can do.
This item is available for next day delivery. You can pick this in the checkout.
We offer free post to any mainland UK address with a basket of more than £80. We also send all over the world and the best way to find out how much postage you will pay is in our checkout. Add the items to your basket and then add your address. Our checkout will automatically calculate your total.
We have come from a tiny fishing store and grown into one of the biggest fishing tackle retailers in the UK winning countless awards over the years. We are still a family business offer fabulous service online and in-store.
Spread the cost of larger orders over 6 or 12 month 0% APR. We also offer longer terms with APR charges via V12 finance. Available in the checkout.
You can make your next purchase a little easier on the wallet by splitting the total into 3 payments by using Klarna payments in the checkout.




Penn Chest Size Guide
Small (36″-37″)
Medium (38″-40″)
Large (42″-44″)
XLarge (46″-48″)
XXLarge (50″-52″)
Wader Waist Guide
Small (28″-30″)
Medium (30″-33″)
Large (34″-37″)
XLarge (37″-39″)
XXLarge (39″-42″)
3XLarge (42″-45″)
Kinetic/Westin Chest Size Guide
Small (36″-37″)
Medium (38″-40″)
Large (42″-44″)
XLarge (46″-48″)
XXLarge (50″-52″)
3XLarge (54″-56″)
Grundens Chest Size Guide
Small (36″-37″)
Medium (38″-40″)
Large (42″-44″)
XLarge (46″-48″)
XXLarge (50″-52″)
3XLarge (54″-56″)
Vass Chest Size Guide
Small (36″-38″)
Medium (38″-41″)
Large (42″-44″)
XLarge (45″-46″)
XXLarge (47″-48″)
3XLarge (49″-51″)
Trakker Chest Size Guide
Small (38-40″)
Medium (41-43″)
Large (44-46″)
Xlarge (47-49″)
XXLarge (50-52″)
XXXLarge (53-55″)
Korda Chest Size Guide
Small (36″-38″)
Medium (38″-41″)
Large (42″-44″)
XLarge (45″-46″)
XXLarge (47″-48″)
3XLarge (49″-51″)
Guy Cotten Chest Size Guide
Small (86 – 94cm)
Medium (94 – 102cm)
Large (102 – 110cm)
XLarge (110 – 124cm)
XXLarge (124 – 134cm)
3XLarge (134 – 154cm)
Fox Chest Size Guide
Small (36″-38″)
Medium (39″-41″)
Large (42″-44″)
XLarge (45″-47″)
XXLarge (48″-50″)
3XLarge (51″-54″)
4XLarge (55″-60″)
Nash Chest Size Guide
Small (36″-38″)
Medium (39″-41″)
Large (42″-44″)
XLarge (45″-47″)
XXLarge (48″-50″)
3XLarge (51″-54″)
4XLarge (55″-60″)
Aqua Chest Size Guide
Small (38-40″)
Medium (41-43″)
Large (44-46″)
Xlarge (47-49″)
XXLarge (50-52″)
XXXLarge (53-55″)
Guru Chest Size Guide
Small (36″-38″)
Medium (38″-41″)
Large (42″-44″)
XLarge (45″-46″)
XXLarge (47″-48″)
3XLarge (49″-51″)
Preston Chest Innovations Size Guide
Small (36″-38″)
Medium (38″-41″)
Large (42″-44″)
XLarge (45″-46″)
XXLarge (47″-48″)
3XLarge (49″-51″)
Trouser Waist Guide (Inches)
Small – 28″ – 32″
Medium 32″ – 34″
Large – 34″ – 36″
X-Large 36″ – 38″
XX-Large – 38″ – 42″
XXX-Large 42″ – 46″
XXXX-Large 46″ – 52″