Welcome to our forum.
The 2x a day sounds like the "normal" cycle. Your owners manual should say for sure. (Iwas hoping maybe you fat fingered the cycles to 6x a day and that was the culprit).As far as temp in the cabinet in a nutshell, heat want's to balance out. So keeping the cabinet at the same temperature as the water would be ideal so the cabinet isn't drawing heat from the water and causing the heater to turn on. there are other considerations such as retaining the heat (Air leaks) or how much you use the tub (heat escapes off the top quicker, the amibaint temp, using the blowers, etc. If insualting the cabinet is the way to go, I would think another layer of foil backed foam board along the skirt (And the bottome of the tub if possible) sealed up would be were I started as well as sealing the lip between the tub and skirt. That's my free advice (worth every penny too )
Water I also just purchased a spa blanket from Doc's site. I haven't installed it yet, but probably will tomorrow when I can cut it to fit perfectly. I am nuts about wasting energy anyway and this has also set me in a tizzy! I also have a neighbor who has an inexpensive tub with the cover fallin in and he still uses far far less electric than I do. I will find out what is going on.
This is why i like this forum. Everyone tries to help out!!!!
No problem. Just as long as you realize, I am not a dealer, I am not an expert. Just a goofy guy with an opinion.
Water, I bought the foam one, not the bubbles.And Drew is an excellent reference, and you can depend on him getting just about any info you want!