If I am stopping for and hour or so then I leave it running. I was told by the entertainer drivers I know (They were the only source I had before PC) that is standard procedure. They say starting you engine is the cruelest thing you can do to it so leave it running. I have been told by others since, that it makes no difference.
I always leave it on High Idle. I switch to Low Idle for about a minute before I shut down.
I usually travel once a week but when I sit for a few weeks I will usually start it once a week. But if you start it you need to get it up to normal operating temps or you may do more harm than good.
Davy
1999 XLV X-6872, liberty #440