Thanks DanS. That is helpful insight. I must say that since I posted this thread, I also posted several threads on the www.gardenweb pool & spa forum, which raised other concerns, including the 2010 mandated USEPA change from the R22 refrigerant to a more "ozone friendly" R410-a variety. For your reference, the thread can be found at the following link:
http://ths.gardenweb.com/forums/load...510501.html?17
Thus, between the refrigerant issue, the additional upfront cost, a difficult and costly wiring situation (requiring 200+ feet and an upgrade to my breaker panel) and being subjected to temps in the 30's and 40's over the last few days, I am again looking at propane. Regardless, I am defintely getting a solar cover - - which has its own difficulties due to my free form pool. Any recommendations on pool cover and/or rollers and methodology ? I have heard a number of people saying they cut the cover in half, thirds or quarters for ease of handling.