Due to reasons I'd rather not discuss Stupidity),I have to replace my prop I have on there now a 3 blade.after looking at all of the replacement blades there are for a 115 4 stroke Suzuki, I find both 3 and 4 blade. I can slow down to 1.4-1.6 with it now. will a 4 blade slow the boat down even more, I was told yes but I'd like to be sure can I hear from you guys thanks