Bracket build

[Bushwacker]

Originally Posted by strick

. . . 30 inch set back is a bit too much for a 20' foot boat in my mind. The 30 inch set back is for big V 8 motors that go on a 23 foot boat. Another thing....make your flotation chamber as big as possible.

I agree with Strick. The 20' hull is a LOT smaller and lighter than the 23, so the CG will shift aft a lot more with a bracket on a 20 than it will on a 23. In other words, the 20 is a lot more sensitive to both setback and engine weight, so it's best to minimize both, AND make the flotation tank as big as possible! I'd bring the bottom of the flotation tub straight back from the transom like the Hermco and Strick brackets. I wouldn't worry about it dragging in the water coming on plane because I think it acts like a big trim tab and provides some extra stern lift (and drag) in that short transient situation. It looks to me like Armstrong put a taper on the bottom of their bracket to avoid the drag, but they're giving up some dynamic lift and a lot of static flotation with it. I think trading a little extra drag during a few seconds climbing on plane for more dynamic lift and static flotation is a move in the right direction!