"In for a penny, in for a pound."

When you switch to trimmed Osage Orange trunks, I think the bass would like it if you made one of your rebar pieces a little longer and added a second tree. You would get double the vertical structure for only a little bit more material and labor.

You could even cast between the two trunks and any self-respecting bass holding in the structure would be pretty much obligated to hit your lure!