Whenever I make multiple day trips miles from home I do. The hassle and loss of fishing time and expense to try and fix it locally sometimes good experience ....most of the time not. And only takes a minute to swap and you're gone again. Also I want a prop to run if I send one in to repair under normal circumstances.

You can slip a hub bushing just enough to make it so it will slip under heavy load when your trying to apply power. Had that happen many times. You can get around and stuff but it sure puts a damper on things. Fishing new lakes and rivers especially you can just misread a map a little and bang, boom.