I also have the Connect2 bar.
The first thing I did after having had both the 5.5 and 7.5 in the air, was to shorten the rearlines 15 cm (just knots under the floaters, easy).
But I did the same on my Connect(1) bar and my Peak kites, and I have also shortened the rear lines a lot on each and every LEI kite I have had over the years.
This way I have a much more natural feel when carving and riding in general, and I can backstall when riding waves or relaunching.
Had no issues backing the Hybrid up, and didnt notice more flapping than the Peaks, and it turns quite fast but not the same "pinwheel" way, nope.
With default bar setup (which is set like most LEI kites are) I would not be able to back it, nor avoid flapping, I am sure, but have never ridden like that.
So a lot shorter rearlines for me, but as said, goes for all kites without exception for my liking.
I like the Connect2 bar having a frontline safety, instead of the 5th line I have removed on all Peak bars.
So IF in trouble, one can release - not sure if it works well on the Peaks (has anyone tried a frontline safety or is it a no go?), but works on the Hybrid - tried it.
Peter