Old School was supplied with the stock Garelick mount and a short shaft motor. When in the down position, the prop made quite a nice rooster tail, but very little thrust. I took it to a shop and had new angle plates made to compensate for the transom angle. The plates we changed were the ones that the motor plate attach to. Took about an hour to source the right material and 10 minutes to make the plates. It made for a very clean modification.
Boats with the wedges behind the transom plate do not look clean to me, and I question if there could be some point-loading issues. BUT, and this is a big BUTT, they do make for excellent steps for reboarding!