I wanted to get some comment from some of you old "salts" on here. I've got a 16 ft. bay skiff with a 50 hp force on it. This is my second motor of the same type (first one got fried, long story). My first motor had a hydrofoil(stingray, whale tail, etc.) mounted on it. I always heard they helped with hole shot, quicker planing, stability, etc, but you lost about 10% on the upper end. I haven't made up my mind if I want to put the hydofoil on my current motor. Are these add ons really worthwhile? If so, how come all the outboard companies don't just build them into the lower unit themselves?