Gps said 40.....i was full throttle and running around 5500 rpms...

conditions: calm water no wind..
gear: very light
persons: 2 adults 1 kid
Gas: full tank 24gallons
Propeller: stock

if anyone has an ideas please let me know if that sounds just about right! also i was thinking bout buying a new stainless prop...what would yall recommed for a better hole shot...and or higher top speed...LMK TY