Great ideas so far. Thanks.
I think I have the buried anchor for the come-along pictured in my head. It sounds like you used a 12" long piece of 4 inch channel steel that was a quarter inch thick. Sounds like it was laid along the rebar in a horizontal fashion and wired beneath some rebar. A large bolt that goes through the channel steel comes up through the center so the bolt head sticks up above the concrete.
Concrete dries. Bolt is removed revealing a small hole in the floor. When not in use, hole is plugged with a bolt that has a slot cut in the head so it can be turned in and out like a screw. Remove bolt. Insert large screw with an eye and use it to anchor a come along. That sounds like a nice idea.

Last edited by Lugnutz; 02/05/2017 11:27 PM.