We will be fulltiming in a few short weeks.  We will be fulltiming, but not traveling much.  We will need to hook up and extend-a-stay hose for our propane. Would love advice, recommendations etc. on how to do this, any comments appreciated.  Thanks.

It looks as if all you do is connect the hose to your current tank and then connect the other end to a 20 or 30lb external cylinder. If you are going to be there for a while and don't want to move the RV why don't you call the propane place and see if they will deliver and setup for you a 100lb cylinder. Then when your ready to move call them back and they will come pick it back up.

Not sure why you require an extend-a-stay connection. A standard 30 lb propane cylinder should last a month or so unless you are running the furnace. I assume you have electric for the hot water and refrigerator. Most newer models do. If you expect to be in the same location for 6 months or so, call a local propane dealer or just go to the campground office. They will set up a tank for you, if the campground allows it. Some rigs have a low pressure cnnection located near the propane cylinder vault to use a "quick connect" for ease of use. Mine does (Sunnybrook). I am almost sure a lot of the newer units do also. Call you dealer and ask the question. Ken