We live in a double wide on a foundation also and have for many years. We use Travelers and they have been awesome. Had a tree come down on house during hurricane Floyd about 8-10 years ago and they were great. Our contractor that did the repairs was paid immediately and the repairs were all done first class the whole way through. In fact just the master bedroom and bath were damaged but they not only authorized all the repairs to the structure and the rooms but even put a whole new roof on the house because they were afraid that the old and new sections wouldn't match. We like you live in Pa, may be worth a call to them. Good luck!