Before Christmas I upgraded my basic SOT kayak to an RTM Disco, again a plastic SOT. What with life stuff and the winter weather, I have not used it; it has been on its side on a rack in the garden. A while ago, while the weather was still cold, I went past it and noticed the plastic was deformed (see attached).
It is a hatchless design so I wondered if the cold air reduced pressure and sucked it in? However we're now in warmer weather and it was still like it. I removed the drain plug as the instructions say to use that to manage pressure; again it hasn't fixed it.
Have I ruined it by not releasing the drain plug before the winter? Is it fixable? If you think it won't affect the handling that'd be a good outcome too.