Wow, another great thread Ron. My nephew was just commenting last night on your outstanding skills.
FYI for anyone using a c-pap machine, you don't have to leave it home when camping or worse yet go to a hotel instead. You can run it off a car battery and power inverter just fine. I saw a guy at Bowjam do that this year. He was using a 250 watt inverter. So I tried a 70 watt(no fan, longer battery life) and it worked fine. He was getting 2 nights power without any trouble so the 70 watt may do 3 or more. Word of caution: do not hook up the inverter backwards, it will blow it out(don't ask me how I know that). This has worked great as my wife now is more willing to go with me.