If I owe an easement & the land owner using the easement runs a haunted house am I liable for all the customers using our easem?

I agree with the above answer. Also, it is unlikely you will be responsible for their use of the easement.

What attorney would a HOA need to handle people who have not paid their yearly dues even after a lien has been placed on prop?

There should be a clear path to determine how the realty companies has power over the HOA. That needs to be determined first. To force the...

The HOA could enter into an agreement with each of the relevant landowners agreeing to indemnify for any liability related to the access to the...

How can I get a tenant who rents property for mobile home off my property?

A bankruptcy that old has no affect on the tenant's obligation to pay rent. You can likely terminate and evict as you see fit.