I use to hate tossing all that materail out and asked a fellow who does it is there a way I can get more use out of it. He said he gets 4-5 years out of the stuff on his boat and he showed me how he does it. I now get 3-4 years out of it. But I set it up so it can be re-used easily. There are different mil thickness of the stuff and I prefer the slightly thicker material. I use a removable nylon web belt band around the hull and have a frame that allows for simple re-use. It is not as pretty as compared to shrinking it tight to the keel but I have no problem getting more than one season out of it. I roll it up and stuff in in the loft of the shed for the summer.
I have a friend who has gotten 6 years out of it and he uses it year 'round, he trailers and when he brings it home he cleans it up and slips the old shrink wrap on to keep all the tree crap off the boat. You will need a roll of that wide white shrink wrap tape to patch it as needed but, I was able to shrink wrap my boat for <200 in materials, ( I think it was ~150 actually) and if I can get 3 years out if it that will be great.
One time after 3 years, some insects landed on the white cover and birds pecked the hell out of it and shredded the material. Other than that one event it tends to last for years if you take the time to set it up so it can be removed with cutting it.
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