I put our joists at 24" o.c. This kind of mandates use of full 2-by stock for the decking, so we used 2 x 6 instead of 5/4 decking stock. Besides, the actual $ upcharge for going to the full 2-by stock was negligiable. For installation details, check out this link . I mentioned it before, but I will say it again...that Bo-Wrench makes a difference. It cost about $45 deld from Amazon.com and I don't regret one penney of it. The thing works. The last thing that I did not have in my tool arsenal, and it would have helped some, is a board tweaker. A breaker bar with "U" shaped grip at the business end to slip over a twisted board and allow flattening it out to remove the propeller twist. This is kinda important if there is any twist in a board as it enters the prongs of a Tiger Claw clip. Why? Because the height at which the clip tip enters the board is the height at which that board will remain for good. If the board is twisted and elevated off of the supporting joist below...well, you know.
