Best of luck whatever you decide. Maybe I’m getting old ..but I’ve always been of the mind that nearly a century of R&D from the big brands that make outboards, might have suggested there isn’t a need for such things…or they would have changed the design by now. The only other reason I can think of for things like these and doelfin and the likes…is to mitigate a poorly suited engine to boat set up. Anyway. All the best.