Is it worth spending the $$ to have a spare prop sitting on the shelf? How likely am I to damage the prop on my boat. I've not ever damaged the props on the other boats that have had but they were stern drives so I don't have any experience with inboards. Wakemakers have their stuff on sale right now but I wasn't sure it was money well spent. My boat has the 537 prop on it right now so I was thinking if I would either get another 537 to have or for a few more $ get the 1433. Seems like a lot of people have had good luck with that prop too.