Interesting concept, heavens knows most RVs just sit in a parking lot most of the time. If you were just looking to use the trailer for one, maybe two extended trips a year, this might not be a bad idea. But for those like us, who do lots of weekend trips, it just would not work.
I don't mind lending my trailer out to family at all, if I am not using it. I did that a few times with my 19. I know that they would take care of it, leave it in clean condition, and fix anything that might break. For me, this is what family is all about, sharing, in one form or another. I own 70 acres of rec land with my brothers, and a few revenue properties, and have done so for well over 20 years without any problems. Sometimes I end up doing more work, as I am the builder guy in the family, and on the revenue properties, I just charge for it, and they are more than happy to pay.
I don't think there would be an insurance issue in the case of a shared trailer, if it is not a business deal. If renting, you would likely have to have better coverage.
2017 Escape 5.0 TA (someday soon, I hope
2015 Ford F150 Lariat 3.5L EcoBoost
2009 Escape 19 (previous)
“Most folks are about as happy as they make up their minds to be.” — Abraham Lincoln