Thanks, Im gonna guess a 25″ on the 150 and 24″ on the 175 because of gearing difference. Will probably repower my Sabre with the new 175 4-stroke as when we all 4 (only 460lbs) were in the boat with the 24″ Fury today and 1/2 tank itd only only do 46mph not able to trim boat up on pad without running out of water psi. Granted its 100*, but Trophy is going back on with its natural lift as have lighter motorguide and no seat was even up front.