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I order my marine plywood from Homestead, $54 a sheet for 1/8” Okoume. A Barrelback takes about 25 sheets of 1/8” plywood.
Matt B

https://www.marine-plywood.us/mahogany_okoume.htm

Hi Joe,
25 sheets of plywood will be perfect, I ordered 27 and had a few left over.
Matt

I don’t want drag the Raptor discussion out too far. As its use applies to boat construction, there is a fair amount of sticky epoxy involved when using the Raptor nailer/stapler which can’t help smooth operation of the tool. You should see how much dried epoxy is on my stapler and it’s still firing...

Right On, My family will be hauling ass across a lake this weekend in a Glen L boat I built myself. I get to go and do as I please, thank you US Constitution !! While in the Air Force, I spent several years in other countries, no thank you. I love my home.
Matt B

Any length added to the boat has to be done by spacing all the frames farther apart. Only adding length between a couple of frames in the cockpit area will severely upset the lines of the boat.
Matt B

I had to think about your 12 degree question, The Barrelback is a very narrow boat at the transom, the 12 degrees is about the angle it widens moving forward. As mentioned in a previous reply, I would leave the camber boards long and finish out the angle later. I would even say, it’s just part of fa...

Welcome, I will enjoy following your build.
Matt B

A new 40 hp Yamaha is 215 lbs, Sounds like a good engine for the Zip if your transom is built to specs with quality materials. I’m with Chris on road chop, I cringe watching the Malahini in my rear view mirror over bumps, but it’s been bouncing around back there for 3 years now with no major damage....

No doubt, the Raptor nailer and stapler are problematic. I don’t get too hung up about the stapler denting the wood when it will be covered up by another layer of planking. As for the nailer to control denting, I monkey with the pressure until my grumbling is barely audible.
Matt B

Performance report on trim tabs: I had a problem last year with my Malahini not performing well. With four people in the boat, she had a hard time getting on plane and no matter the load, porpoising. So, I bought trim tabs. What a difference. Now I have very little bow rise, with or without passeng...

Final trim tab results. The large tabs with the spring tension from the small tabs is the answer. Makes sense, a plywood boat is relatively light weight for its length compared to a fiberglass boat. The wake is fine now. We don’t use much fuel skiing because I’m only good for 3 pulls.
Matt B

That’s it, all the camber boards are identical. The difference is how long each camber board is.
Matt B

I put trim tabs on my Malahini because it had a lousy hole shot and porpoised bad. I don’t think it really changed my top end, but I do get a little more center spray. I mounted them towards the chine too. What a difference in take off and NO more porpoising. Malahini with a 90hp and trim tabs pops...

Heather and I have been to 3 Gatherings at Hales Bar, nothing changes and we’re OK with the accommodations. I could make a list of needed improvements but the experience is about boat builders and boats. I love having our boats parked right outside our door. The distance to Chattanooga on the river ...

I didn’t know Etec 90 hp are a 3 cylinder, cool.
Matt B