For about $125, you could try a SOLAS Amita 4, a 4 blade prop, 14x23 RH 15 spline, part no. 1513-140-23 - that's my best guess at a match for your boat/motor.

If it doesn't work, and puts the rpms up too high at wide open throttle, you can always keep it on hand as a spare. If you have to go up to a 24 or 25 pitch, you'd probably have to go stainless which is normally $300+

You have plenty of horsepower for a 17 ft boat, your prop just isn't matched to the setup very well.....the previous owner was probably trying to max out the top speed, putting the correct prop on there will reduce your top speed by maybe 3 or 4 mph but you'll save a lot of money on gas since the motor won't be working as hard and your takeoff and handling will be so much nicer.