Looking advice on getting a fer more top end speed

Why

I barefoot and my fat butt needs to go faster, or lose weight. The weight loss isn't working so I need to speed the boat up.

I have a 2007 Outback with about 100 hours on it. When I took it in for the 100 hour oil change and service I asked the dealer about a prop to get more top end speed, but they could not decide what I needed.

One guy said go up in pitch the other said down, they were still discussing it and I just walked off.


opinions?