I noticed a post here that got me interested in our boats top speed.

The boat is a 2002 Lowe AN165S, a riveted aluminum deep V, 16.5'

It has a 50hp Johnson with I would assume the original prop, its a 3 blade (black painted) aluminum with no markings.

It runs on my gps a max of 28-28.5mph with just me, empty livewell, light gear. 24-25mph with another adult, livewell full, etc. It does have power trim.

Sounds like I should easily get 30+mph, even possibly closer to 40 properly setup. But what IS properly setup? If the prop is poorly sized for the boat, how do I find a better fit?