This spot is not exactly at "Kool Corner" as per Google maps. You pass that point which is private property then turn right unto a side road where you see a canal of running water. You will see other RVs and campers to your left. You can continue on the dirt road following the canal and at the end turn left - the dirt road gets a bit rough but I made it up there towing my trailer. I met a friend up there who'd been there before and had found a great spot at the top of the hill. There was only one other RV up on the hill probably 100 yards away from us. We had a really nice view. It was a bit windy and cold but not that bad.  We were there in December 2020.

Next time I'd like to try Lake Mittry which is only a little past this spot.  I'd go back again but it was my first time in Yuma so there's a lot of places I like to explore yet.