I can't speak about the new crossover bar but can tell you what I found with my homebuilt ones.
Some of my kites worked well with it. My 7m Bullet loved the bar. My 4.5 Bullet would hardly fly with it? My 3m Brooza and 5m Ace liked the bar in
strong winds but if wind was very low the pulleys weight etc. played on the brake lines. I even had light Ronstan pulleys. So no, I think generally
you lose some bottom end with the crossover.
The crossover bar adds about 2/1 brake input as you turn the bar but you are basically flying 2 line until you turn the bar. In my version the center
lines were set and you only had knots to tune the sweet spot per kite. You hooked in with a D-loop. The PL version looks better.
I wanted to like flying FB on a bar. I gave up on FB with bars one day when I was flying inland in terrible wind. I couldn't keep my 5m ace in the sky
long enough to work out a ride. Out of desperation I tried it on handles. It was crazy :o like I had a completely different kite. It was still a
struggle but I managed to get riding at least. Riding with a crossover bar has it's obvious advantages but it sort of oversimplifies things. If you
want to get the most out of you FB stick with handles and a strop. If you want to use a bar look at depower.
Probably the best way to expand the range of your FB is changing up line length.
Kites: 2.5m Profoil , Quadrifoil XL kitesurfer, NPW 5 Danger.
Flexifoil: 1.7m Sting, 4.9m Blade 3, 9m Blade 2.
Flysurfer : 19m Speed 2 SA, 7m Pulse
Peter Lynn :18m Phantom, 15m Synergy, 10m Synergy, 1200 Farc, 460 Sarc, 130 Tarc, 5m Peel, 4.2m , 6.4, 8.5 C-Quads, 3.5 LS2 single skin.
Rides: Flexi / P.L. Frankin'Buggy , Shaped + straight skiis, sand skis, Coyote blades. Core 95 ATB. RKB R2 ATB .
Ken (K2)