Hi Travis,
As a BP member on the same path as you - looking to buy a MHP in 2014 - I can only speak on what I've read and experienced. MHPs in CA suffer the "sexy coast" effect - High price expectations from seller but low CAP calculations - so I have to look outside of my area.
I've discovered 3-5 different sites that list MHP for sale (PM and I can provide names) and constantly am looking to identify one and run numbers on. Most of the brokers I've emailed to request more information have been responsive enough and provided it along with answering any questions.
I am coming to terms with "A deal is a deal is a deal" regardless of geography as long as I account for what it will take to invest from afar. Put systems in place to double check and audit onsite managers (BP podcasts have been great for these ideas), systems to handle any evictions, systems to reconcile rent, etc...
The one strategy that I have not done in my local market is to get information on the local parks. Find out which ones are still "mom & pop" owned and get to know them.
Knowing absolutely nothing about Montana, that strategy might not work for you but I have been amazed at how many MHP I have discovered are in my county that I never knew were there until I started to go down this path.
Hope that helped a little.