Mine holds up good up to 45 - 50 but I'd be afraid to see 60 especially if it was gusty out. My problem is I have to REMEMBER to only run 45 - 50 on the way to the ramp. With thoughts of stripers and sugar plumbs dancing in my head it can be difficult.
Airslot - old member here that had his enclosure blow off going down the road right after it was made.
http://www.wellcraftv20.com/communit...ight=enclosure