i have the Thule Gateway 3. my cars a 99 Accord sedan. i only use 2 bikes, so this worked great since the bike cradles kept sliding around. theyre UV resistant zip ties from Lowes.

and i moded the side strap hooks to use them as the lower straps, since the side strap hooks wouldnt work with my car, theyre too thick, couldnt close the trunk

and i attach the carabiners under my car to the tow hook (big ass metal ring welded to car, car came that way) cause the hooks wouldnt stay put attached to lower part of trunk lid

got the carabiners at REI

setup is super reliable/strong now