It says that Hard-sided pop-ups are allowed, but then states that small pickup pop-ups are allowed as long as the canvas is not exposed.
....there are actually quite a few hard-sided pop-up campers out there:
-ALiner
here-->-Chalet Arrowhead pop-up hardside camper
-Forest River Rockwood Hardside
-Flagstaff Hardside "tent camper" series' T12RS, etc, etc.
....and numerous more...
The "pick-up camper" mention further down on the notice segregates the hardside pop-up from pick-up truck bearing pop-up campers. I suppose the notice could have been written far better....I'll redo the copy for them for a mere $700 fee (focus group included) :B