I’ve used most types of bike transportation methods.

Carrying bikes inside a vehicle, RV, camping trailer probably provides the most peace of mind than any exposed carrier. We currently have a van and it makes packing the bikes for a trip easy and worry free.

I would think a hitch mounted tray is next and then any other hitch mounted rack. There are security concerns and possible damage to the bikes as a second bumper.

I’ve used a roof rack, which does get the bikes off the ground. I find them a little tough to secure the bikes from theft.

The one method I haven’t used is an enclosed pod or hitch carrier. For long trips that would be nice, but I would think a pretty expensive investment.

It does boil down to how much you want to spend for the level of peace of mind when traveling.

John