(Talkin' 'bout an '89 Westy)

   "Someday,"  I'll get around to dropping the flaps and refoaming
them.  In the meantime, duct tape across the foot well vents keeps
unwanted fresh air in check.

   The shut off valve is tight, so we have no issues with hot coolant
pipes inside the cabin.

   "Vanagon Hot Foot Syndrome" has been mitigated by removing the
carpet and underlayment and applying insulating blanket onto the
floor.

   And, of course, there's no substitute for working air conditioning
in this North Georgia climate, aided by a fan placed in the pass
through to help keep the feets and paws cooler.

http://tinyurl.com/7lfbty2 (cheaper)
http://tinyurl.com/8xvk6mv  (less likely to flip over)
(Wally World sells this brand)

Geo/ATL