I am wintering for the first time in our High Country, and while enjoying the experience I am surprised the rv cools off so quickly. A couple of questions that have probably been addressed but I haven't found them so I would love to hear from those that have been there and done that. For good or bad. Is there a down side to using spray foam around all the holes cut into the floor and wall for plumbing? What are the thoughts of using rigid foam on the sides and tops and bottoms of the slides? Is they were pushed up tight against the seals they could even help with the air infiltration from that source. And it would only be practical if staying put for an extended period of time, but the pieces could be labeled and used again next year. Thanks in advance for those willing to share their experiences.