Mike CHS
Herd Master
We have used a couple of the Wedge-Loc gate hardware sets but we were able to use a diagonal support on the hinge side. I'm not sure how effective it would be on a standalone T-post. You would need to figure out a way to support to T-post to keep the gate from sagging.
http://www.kencove.com/fence/Wedge-Loc+Gate+Hinge+Set_detail_HWG.php
http://www.kencove.com/fence/Wedge-Loc+Gate+Hinge+Set_detail_HWG.php