Welcome aboard!
Don builds a great bracket with the most flotation of any production bracket, which is very important on a 20 if you want it to self bail at the dock, plus it was designed by Bill Potter specifically for a SeaCraft!
Suggest you check out my post on
"Pro's & Con's of brackets" before you get to far into it! Minimizing motor weight and setback are very important! Just going from an I/O to an outboard will move your CG aft. Adding a bracket moves it even further!