TJ is also hard to fit into a harness.. even the no pull ones. One of the things I have done that helped a little. When he kept getting his leg out of one of them.. I put a little t-shirt over the harness. This worked well. He is a houdini for sure.
I am going to try this changing directions constantly and hopping to the side. I don't care if I look like a nut.

as long as it works. There have been some great ideas here... and I am going to give them a shot.