Thule Rollercoaster

Anyone use this and is it worth the extra money? Can you just buy the roller? I have the hydor glide saddle and don’t see the need to buy an extra one. FishHawk

Less is more
Hydroglide alone works fine for me. If something goes over the edge of your cartop and rests on the windshield to protect your cartop when you lean your boat against it, that might be worthwhile. I am using a beach towel for that.