Been RVing for over 40 years and have enjoyed every level of RV, from a hard-sided Apache pop up to our current 2006 Georgie Boy Pursuit MH. Every size of TT you could imagine in between. The pop up, being hard sided, had no issues with canvas, but moisture still mattered. The hard sided Apache had rubber molding that had to fit perfectly to seal as the sides were put together. They never did, and we always traveled with rolls and rolls and rolls of duct tape for all of the edges. Added significant time to both putting it up and taking it down. AND - it was LOUD when it rained, with seepage and therefore mold growth much more of an issue than with out TTs. As previously stated, it had to be totally dry to be 'put away'. Mold seemed to always win out. No bathroom, a very small, poorly located ice box (then a small fridge) held almost nothing. Raising and lowering it was a pain as well, particularly when our crank broke! No hydraulics for us! Yes, the more creature comfort you have in a TT the more problems are possible, but honestly, if it's raining when you arrive you can use your TT - not your pop-up! Later, we bought a new pop-up, with a slide for the kitchen area! Canvas sides, a small fridge, still no bathroom, but chose it because it was so light and we had a much smaller tow vehicle. One evening after driving about 8 hours we arrived at a CG that had no available sites until the next day. No overnight in a Walmart parking lot possible. Exhausted, We stayed at a motel across the street from the CG. Unexpected expense for sure.