Replying to T-Bolting

Im remounting a pair of Hellbents with Hammerheads for this season. This will be the fourth mount for these skis (twice with Look 14s 328 bsl, and once with Rotefella Cobra R8s). Since these skis are already Swiss cheese, and the HHs use a 6 hole mounting pattern (not including heel piece) I was thinking about T Bolting if I ran into a situation of not enough space between existing holes or overlapping to holes.

Anyone Tbolt before and have advice?