[Desert Dan]

It may be easier for your dog to jump in through the back door?

Maybe a milk crate or step stool would help? Or make a ramp the hooks into the trailer hitch?

Is your dog old or heavy or both?

My dog can jump into the back seat but sometimes slips on the metal sill.

I lift him out of the H3 most of the time since I had a dog tear an achilles tendon on his front paw (no fun).