Which marina are you looking at using? I purchased my supra last summer from a marina on Normam that was dry docked at their facility it's entire life since leaving the factory in 2006. After being at there dry storage for 7+ years, did not have a single scratch on it interior or exterior, absolutely mint condition. I wouldn't hesitate to keep my boat there, or in a similar facility. Same idea, monster fork lift that just drops it in and pulls it out.