Left mine in Fl in the water for 1.5 years with only two visits. However my broker showed the boat occassionally. (not as much as I would have liked!) I had more issues with the boat I stored on the hard
, but nothing big really. On the hard, with little breeze, things get very hot inside. Doors swell and wont close etc. If you can somehow leave a few ports
open with screens, but protect from hard rain the ventilation is good.
Advantage to storing on the hard is the taxman doesnt go after you. (at least last I heard) Although they didnt on the above boat (in a backwater home dock) either.
every hole in the boat if storing on the hard. (tank vents, thru hulls etc) Things like to establish residence in those places! There's a very pourous type of foam product (like Rain Gard for gutters) you can stuff in the thru hulls.