Prop help

[QuikSilver]

Im still new to the boating world and looking for a new prop to get more speed out of my boat. I have a 1988 Skeeter with a 88 150 Merc and right now I have a 4 blade 23 pitch prop on it. Like I said I want to get more top end speed out of my boat cause right now im hitting about 50mph any help would be appreciated or if anyone has any suggestions about which prop would work for what im looking for. Thanks in advance

[Al from Canada]

Steven.....what rpms are you getting at wot? And I'm assuming that the 4 blade prop you're using is stainless and not aluminum?

[QuikSilver]

im running around 5800 and water pressure at 22-23 and yes its stainless

[Bass Junkie]

24 Tempest plus

[QuikSilver]

I tried a 25 tempest and could not get the boat to plane