End up using my Dewalt cordless impact wrench to screw the lag bolts into the Oak rafters. Very solid installation. Everything plumbed up nicely. The tripod pitch pads are a must. I'm confident that there will be no leaks. I have another tripod that will go on the other end of the house. Haven't figured out what will go on it, but it'll be up and ready. Presently, the quad is fed with 7' of Times LMR-240. This short stub line will barrel up to 100' of Shireen LMR-400 flex. Once it fed to my shack, I'll probably cut off 20' of slack.
No measurements yet, but I'm suspecting I'll see the entire band under 1:3.1, as it was 15' off the ground.
This tripod, I think, is a good bang for my $. I would have preferred a Glenn Martin Engineering, roof mounted tower, but those are $$$. One day, I might mig me something like that.
I can get my eyeballs right up underside this install and inspect it easily. The only thing that I would ever do with a tripod like this, is replace the rivets with stainless bolts. If this system was any heavier, I would have done that.