[JohnB]

If your talking about an outboard setup, a 4 blade powertech prop give you quite a bit of lift, but you give up just a little on the top end. Trim tabs also can help, so can moving everything that can moved forward. I found between the old battery mounting pads in the back bilge, wet wood in the transom and fuel platform, etc, I was able to shave off a couple hundred pounds. I have used Doelfins on smaller boats, was never a fan of them on big boats.