big rubber tires. even if you add them after the fact.

collapsible can be a pain in the ass after being in salt air/water for a while. if she's getting it off the hitch-haul it'd be nice if it could stay full size.

your wife can handle damn near anything after dealing with you, but make this one easy on her!

(and i'd spray that thing down with WD40 every time she used it