Quote from Wayne Gibbous:
Good idea about the prop. Most props on boats like an 18 don't use a shear pin anymore AFAIK. At least mine doesn't (18ft Searay/w 150 merc and ss prop). They have a rubber hub cushion setup but the problem is, if you hit something and it spins the internal rubber bad enough, the prop will need to be refurbished. The hub will just spin and you are pretty much dead in the water. So bring another as backup. It can just be a cheap aluminum one. Definitely check your prop to see what setup you have, and try taking it off/putting on. Could be hard and you don't want to struggle with it on the water.
Prop is stainless by mercury, 23 pitch. I bought it when I bought the boat back in 2008. Motor can be brought high up to a trailer postion but still would be difficult to change in the water with waves breaking on you. I do have 2 paddles and a trolling motor for it as well.