gentlemen: I have a 17ft fish n ski with merc 115 inline six s/s prop I am realy happy with the set up now that I deleted the big ugly fin off the back 5400 rpm wot 44 mph nice low end power etc. here is my question im pretty sure I need a spare prop nothing fancy or expensive just a spare to keep in the boat that will get me home. that is the only time the spare prop will be used , i will have the original prop repaired or replaced with one just like it, hopefully the spare will spend the next 10 years in a under seat storage bin, with that in mind any ideas? Is there such a thing has a prop designed for limited use with economy being important Thanks in advance