Self insuring vs Roadside Assistance

My motorhome is an older converted bus so I have Coach-Net. I try my best to keep everything in tip top shape, but it isn't always possible to find every problem area on a vehicle with 400,000+ miles. I had to have a roadside mechanic come out once to help with a failed wheel bearing. Coach-Net paid for the mechanic to travel three hours each way at a cost of something like $900. I had to pay for the labor for the actual repair.

I didn't have the right Coach-Net plan to cover the trailer behind my motorhome and it cost $300 to have the trailer towed when it had problems.