Yeah I definitely would be frustrated like you are. Hopefully this does the trick. You have helped him as much as you can, suggesting the shed thing was a great idea.I've laid out the framework and drawn up dozens of plans...
Once my husband even took my frame APART because he said he was going to build it...
When I suggested we get a 10' x 10' dog kennel with cover and floor and run hardware cloth around the inside 2' high for the run he shot it down...
I've even suggested we get a small shed from lowes to convert if he doesn't have the time....