I was kind of hoping someone who uses one more regularly than I would chime in... most of my recent use in matches has been on borrowed guns in team matches. I had enough other issues going on at the time (stocks that didn't fit, 3# triggers, insane switching winds) that it wasn't exactly a record performance.
That said... in my experience, you do not want to put any kind of front or back pressure against the Sinclair 'pod. A very neutral grip seems to work best. The higher up you have it set, the more the legs flex fore and aft. Normally I use a somewhat light grip, same as I do with my Palma rifle. About as much pressure as I would to hold a hammer in my hand - thats just *holding*, not the grip I'd use when striking something. Head pressure was light to medium - not supporting the whole melon like when shooting with a sling, but just enough to get a consistent position for eye relief. I did notice that the Gen 2 I was using in Ireland in the Creedmoor Match had a pronounced tendency to hop to the left, same as a Harris, if I set up in a 'normal' prone position (right knee pulled up, body weight shifted to the left, maybe a slight angle of the body to the left). A flatter position with the legs splayed out and hips flat to the ground should limit that considerably.
Unfortunately I can't claim to have 'mastered' this particular bipod - still workin' on that.
HTH,
Monte