It really
really depends on how skinny/sketchy water you plan on running in. Most of the Fraser is prop friendly, with a jet being the safer alternative, same with the Harrison.
If you want to get into that type of water, a jet is necessary. A no brainer.
If you plan on working the main part of the flows and not going deep into the Harrison, a prop is your best bet as it is a)cheaper to buy, 2) cheaper to run 3) puts out more power.
BUT, cheaper in those ways mean nothing as soon as you smack your skeg, prop or bust your leg.
I have a 17.5 foot modified V hull G3 (with 70hp Yamaha, prop) and get slammed getting back to the launch in the afternoon on larger lakes. Just like this;
It is not pleasant in chop. But it is GREAT for lateral stability, front and rear casting decks are a dream and can run in relatively skinny water.
I wouldn't even bother with my boat in the chuck. (although others will chime in and say they hit Ambleside in canoes just fine, its not for me to get my my friend, lower back and kidneys beat to sh1t fighting the chop in my modV)
You seem to be a new boater, I would stick to a prop and learn to use it safely first, matched to a V hull.
Just my $.02
Have fun, be safe and enjoy the process.