JFD, Any chance you might check www.target-stands.com
I am familiar with the problem of setting up, and got tired of all the work.
I wanted something strong, simple and easy.
This system is modular, and I can build a 'hotel', if you wish on demand, using standard and cheap lumberyard materials. And non see-thru walls.
The secret is in the bracket, which creates a extremely strong base system.
Check it out, and see if it may work for your problem.
Mark