The cost to join is nominal but well worth it.Other groups to join (if you are an investor and not a GP) are 506 Investor Group and Private Investor Club.

I once started to sue a local MLS but they changed their position as long as I was clear in the listing that I wasn't the owner of record but had an interest in the property I was selling and they didn't want to open a can of worms.To make it easier I just started getting a specific power of attorney from the owner on title along with a clause in the PA that allowed me rights of access, etc. and the MLS had no problem because it was really no different then say putting a probate property on the MLS

Some parks bill for actual power use and have a separate power meter for each pad.

The #1 driver of the replacement cost (and therefore dwelling coverage) is the square footage. 

I was a little surprised at the cost for the services which are $500/month.

does this include all the expenses, capex, maint costs etc? 

If the cost is more than the benefit, don't do the repair.

However, maintenance costs seemed to be never ending. 

I assume it must be pretty pricey if they won't even advertise the subscription cost. 

Make sure the rent from the other parts covers your loan, taxes, and other costs.