I said in a previous thread that park models behave best when PARKED. 40 plus foot with a bumper pull sucks even under ideal conditions let alone high winds. CAn't understand why he would not be using a WD hitch.
1990 Jayco 250 Special
2008 Ram 5500 DRW 6.7, Cummins, Aisin auto
Holland/Binkley 5th wheel, Reese Dual Cam, and more
232,500 kms in 2013
200,000 kms in 2014
160,000 kms in 2015