First off, you need to lubricate ALL the frame joints with Boeshield T-9 as you assemble the boat. I use the spray can if putting it together at leisure in my yard but for travel I use the little drip bottle you can get at most bike dealers (used for chain lube). It prevents salt water from getting into the joints and causing corrosion and the dread “welded” longeron. Boeshield won’t stain or degrade plastics and fabrics like other lubes might. Boeing formulated it to not attack or compromise aircraft wiring harnesses.
Second, whenever you paddle in salt water, try to find a way to flush out the boat completely with fresh water as soon as you can. Most of my coastal paddling ended up near enough to docks that I was able to mooch use of a hose bib and hose at marinas. I realize that is not an option if you are in more wild coast zones.
Paddling in fresh water is not as problematic unless the water is really slimy or gritty. I’ve left my folders set up and repeatedly floated in freshwater lakes and rivers all season without rinsing or drying out. Drying has never been a problem for day trips since carrying the boats (J-racks are recommended) on the car at highway speeds pretty much dries them out completely.
I have to admit that the Traks are really sharp. I was paddling my Feathercraft at a local lake two weeks ago and encountered a guy from Rochester NY, apparently a guide/instructor, and he and his client both had fairly new Traks. This was the first time I had ever seen one up close on the water, let alone two, and I was very impressed. He told me had recently had a chance to paddle Trak’s newest model (the 4.0?) and said it was really slick. Their boats are definitely THE high-performance folders now that Feathercraft is gone. Quite an object of desire. (I had to like the Trak guy: he had the exact same cherry red and black Gearlab Akiak carbon Greenland paddle as I was using. I admit I noticed that before I noticed his kayak.)
But if I was going to do a lot of kayak vagabonding via an RV, I would seriously consider one of Pakboat’s offerings, like the Quest 150. Here is the reason: the decks are removable (on the Quest and Puffin models). Besides offering versatility (kayaks can be paddled as open boats or as sit-insides with full deck) the design makes it very easy to completely dry out the inside of the boat with a towel, even without dismantling it, You can even store one wet by breaking down and removing the frame, then folding the hull skin length-wise, stuffing clumps of crumpled newspapers or cardboard in it (like filling a very long pita pocket with parsley) and then folding it in thirds or quarters width-wise. This makes it compact enough to stuff in the back of a station wagon or into a space in a van or RV until it is dry enough to store (or reassemble at the next launch location.) The combination of the absorbent paper and the air circulation around the paper wads speeds drying. I use the same newspaper technique to dry out my knee high Kokatat paddling boots.