I love my Predator insulated flip over. The side doors are the Cat’s ASS!!
The only problem with the shelter is the boat seat design. The front of the seat is supported by the tub itself which is fine. The back support however has a leg that flips down and rests on the floor of the tub. The problem is that whenever you lean over to grab something, the bottom of the seat kicks out from underneath you and you end up on your ass (or worse). Last year my daughter (adult) reach over to grab something and did a header onto the ground and almost landed face first on the heater. Not impressed!
Frabill has a great shelter but definitely needs to redesign the modular seating. I just fixed my sled by copying one of the competitors designs and I am now very happy with the entire shelter.