Hey guys im new to the site. IM looking for help and or to buy a good used prop. I have a 96 four winns/donzi U-17 unlimited. Its got a volvo penta EFi 5.0 with a sx cobra drive. I currently running a 23 prop. No make or brand on it. Its really slugish out of the hole. goes alright on top. I have tryed the Hr tian, 19 and 21. Gives me better holeshot but only runs 48 on gps. I heard of guys going well over 65 on these things. I hear of a mercury fury 24 25 pitch that i couple guys are running and doing quit well. I would be interested in buying a good used one. There is no much out there on these boats as for proping. Not sure if i can check somehow to see if shes running good. seems a little skippy on low end out of the hole witha 23 any help is greatful.