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21 Redfisher hull hook?


J.N
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I was inspecting my hull bottom recently on my new to me 02 21 RF and noticed the lifting strake on the starboard side has a slight hook by the trim tab. It's also where the trailer bunk stops supporting the hull so now I'm really worried. What's odd is the hook isn't noticeable on the flat hull sections right next to the strake?  The port side looks good so I'm crossing my fingers this is by design. 

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if looking correctly, seems like a strange location for a hook. too far fwd. from picture, looks like bunk runs past the hook. I still would extend the bunks as I first stated but do not think it is going to correct the hook. as seen, the curve of the hook is not going to bear any wt. to straighten it out. hope this makes some sense to you. maybe different photos may explain better, hope you figure it out. try calling MBC if you haven't already.

love to see a side view from both sides of bunk at that distance of last picture and where you see the hook.  

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I removed the big transducer on the strake to allow for a 2nd set of heavy duty bunks to fully support the transom. I inspected the stringers in the bow, bilge and everything looks good. I'm assuming a small amount of hull hook up by the trim tab area probably isn't going to make a big difference in top speed? I'm a big guy @ 290 lbs and the boat has 5 gp27 batteries. With my wife and I along with fishing gear it will run 50 mph with the old tired 2.6 yamaha 200hp vmax hpdi @5700. I think the YM200PTC3 21p power tech prop on the motor is best suited for heavy loads?  I run it easy for now until I decide on a motor upgrade. 

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I just looked at mine.  I have a slight wave on the strake but nothing on the flat part.  I notice awhile ago that the strakes towards the bow where they come in and go up also has a slight wave to them. I always attributed it to the way it got popped from the mold since everything around it is flat and smooth.

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  • 3 years later...

Update for a very old thread. I've inspected another 21 rf hull and it's exactly the same. The hook is on the lifting strakes only and by design I'm assuming. New trailer now with full support and I trued the bunks 100%

IMG_1660.jpg

IMG_1674.jpg

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  • 3 months later...

This boat was damaged when it hit a submerged floating piling... however, upon inspection of the damaged area it revealed a void between the exterior gelcoat/chop strand layer and the structural woven glass layer. The layers of glass were not bonded together and there were voids from 1/8 to almost 1/2 inch in places. This is on the port side of the hull, starts about 8 inches in from the keel and runs all the way through the strake.

I'm not saying it's the case... but if there's voids in the glass layers on these other boats it could cause them to hook over time where the exterior layer conforms to the void. Just a thought. Here's a pic of the void on my 2003 model. I'd get under there with a solid object and tap around the area and see if it sounds hollow compared to the other parts of the hull. Mine was hollow on that side, but solid on the opposite side. Just a thought.

IMG_20210729_081627159_Original.thumb.jpg.f8540cc857e25adfac3e9a280a95b915.jpg

Josh B.

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