Bigger pitch propeller on my inflatable sib boat to gain top speed. 2 x Top speed runs

My old propeller on my 4m honwave with 30hp engine was chewed up. It was a good opportunity to up size the pitch and see if we could get any top speed gains and better performance. I wasn’t really looking for more top speed as the boat was always fast enough for what we needed but what the heck, better to have it and not need it than need it and not have it! We did get a gain but nothing to write home about really. We definitely have significantly increased how fast the boat reaches plain speed! Overall the boat is performing better but is there anything else we can do to increase performance and stability at speed??? Watch this space!!!😉