I have a 2009 Jay Feather Sport 197 which is similar to the 165 but a little longer with a u-shaped dinette, but otherwise the same layout. I have a Toshiba 19-inch TV/DVD combo (19CV100U) and I didn't mount it as I was worried about all the jostling around during travel. My wife made a padded slipcover for it and we set it down on the bed when we travel and it rides there just fine. Sure, that means that I have to put it up on top of the fridge and connect the cable and plug it in when we are at the campsite, but that is just part of our setup ritual. I'd rather be safe than sorry.
During the winter months we bring it inside anyway and put it on a table in front of the treadmill so, for me, it would be more of a nuisance if it were mounted.
I look forward to hearing how other folks have made out with mounting theirs.
Tim & Cindy
our rescued fur babies,
Madison (JRT and Beagle mix)
Beau (Hound mix)
2015 Jay Flight Swift SLX 185RB
2009 Honda Ridgeline RTS