@Mike Fitzgibbons All island agencies use Link MV the local Martha's Vineyard MLS, and a small portion of those agencies also use Cape & Islands MLS and a few use PIN.

I have been doing some research and I have been looking into mobile home investing as a low barrier to entry.

A credit counseling agency, non-profit, HUD registered is the way to go if you need them.

I am currently working as a Junior Broker in Arizona for NAI Horizon focusing on Mobile Home Park and RV Park Investments.

Not to mention not running afoul with the state agencies.

Try to get an agency that has the best training, your education is only beginning, there is much more on the legal and marketing side in your community, what you're getting now is state requirements then you'll find what is customary in your area.

To take it a step farther, you could pursue a relationship with your local housing related non-profits and perhaps develop a niche for serving low income renters with a constant stream of referrals from the agencies, and usually some financial backing from their rapid rehousing programs or similar aids. 

When the Landlord (slumlord) started eviction 5 months later the tenant called every agency in the City.

@Alex FlowersI ran into same problem with mobile home park.

In some places, like Texas where they can grow the mobile homes big- we want 16 x 80 homes.