So Ysanne Isard lets you take a free evade action at the start of the combat phase. Combined with push the limit thi would let you take another action at the start of the combat phase too right? So I could potentially boost or barrel role after taking the evade and reposition after every ship has moved?

Yep, ptl triggers after any action (but only once per round).

That would be my interpretation.

I've been triggering Experimental Interface off of Isard a lot for the past few weeks. Works great. You do want her on a ship that has a reasonable chance to actually have damage on it without being destroyed, a ship that is likely to be vaporized the same turn it looses its shields is not a good fit. So generally you want her on tanky ships with a decent amount of hull. (an evading shuttle sounds fun)

My new list with the deci uses her. EU+PtL+Ysanne, boost with a deciminator after all other ships have moved, talk about great positioning tactics.

It's an interesting combo. Works well with Oicunn, so you can bump, take an action, maybe even boost, fly passed your opponent, shoot them. All good things, all good things.