What is the best way to store a wetsuit in the off season? Is it bad to fold it up? Or put it in one of those plastic containers? Any advice would be much appreciated!
Assuming you rinsed your wetsuit thoroughly and it is completely dry, fold in half at the waist (one fold) and put in a garbage bag and lay flat. Easiest way.
You can also hang it in your closet if you have room. Use a plastic hanger and cover it with a plastic bag so the rubbery smell doesn't stick to anything near it. I've also kept mine in a plastic storage bin for extended periods with no problems.