I had a 14.5 x 17 3 blade on a volvo sx 5.7 I/O getting a max 5200 wot hole shot ok not great on alum blade (kind of chewed up). We mostly do wakeboarding so the hole shot is important and high end speed is not so much. Was told to go with a 4 blade...the mechanic said go with a 16" and the...
