I made some progress with the arena last night.




I got up all the plywood I could do myself. I didn't have anything to notch out the space for the electrical boxes so I had to stop. I also couldn't find my big bucket of drywall screws, which I wasted over an hour looking for. I just found them this morning at the coffee shop...
With another set of hands and a jigsaw we can get the plywood done in an hour or two. Then I have to level the wall and drive it into the concrete, the leveling is going to take some time. I have a hammer drill but I've been told to use the nail gun, the one with rounds of ammo that drive the nail right through the concrete. Never used one before so I'm a bit intimidated.
There is one piece of the wall that worries me:

I had to skip a 14' stud that should have went to the truss in order to avoid the heater. Unfortunately that darker section of frame (covering the heater in the picture) was the final frame section and only has two studs. It's a little flimsy and will be the weakest part of the wall since it has the longest span without a stud.
We can fix this of course, it's just finding the best method. I'm thinking of adding a 2 x 6 ledge for the viewing area, this would give people more room to lean on, and add a hell of a lot of strength to the wall. There is also that section that is missing plywood just on top of the plywood that is already there. I could cut small strips of plywood to cover it with, or I could use more 2 x 4s which we would attach the uni-strut to for the grid. This would also add lots of strength.
This is a lot of work, but man it's fun!