I don't worry about lightning but do watch for wind. Our house got hit by lightning once and on Pentecost Sunday in 1989 I was playing the organ at Church when we got hit by Lightning. Organ and chimes were out for the next year until they got redone. That was a pipe organ that got hit. Funnty thing was the zymbelstern started playing by itself. If I can't stop it at home or Church why worry about it. It does put on a great show and we have nice front windows to watch it from. Staying inside the MH is probably the safest because of the Faraday Cage you are in. A metal frame will normally spread the strike to the ground.