Here's a pic of how we secure our bikes. Our Sabre is a 2012 so our bike rack is a little different than the newer models. Instead of trays to set the bike tire in, ours had slots the wheels fit into. We had to make some mods to get the wheels to fit properly. We also added several eye bolts to the frame of the rack. We bought some handlebar straps from a motorcycle shop and use those along with ratchet straps to secure the bikes to the rack. Takes about 10 minutes to get them set, but they don't move during travel.
Kevin & Janine
2006 Dodge 2500 Megacab CTD 2WD
2012 Palomino Sabre 32RCTS
Pullrite Superglide 16K Hitch