Unless it is a performance boat, probably not worth the expense. Now, if you are one of us that think it is a good idea to always have a spare prop, size it for the summer months and use it then and put it as your spare the rest of the year. That way, you have a spare and a summertime prop all in one.
"There is a grey blur and a green blur. I try to stay on the gray one" Joey Dunlap, Isle of Man rider