before you self launch it make sure theres a camera filming it...
report back here with test results.
cheers.

Yeah right - interesting !

I have never flown any kite underinflated so havent experienced the low pressure situation - and also have to admit to always having my struts fully inflated !!

So - maybe I will get the go pro out and have a crack at flying the kite with all struts 'uninflated' to see what happens - seeing as it seems to be an unexplored adventure!!

Footage to come - ......

Not a good idea really. I had a strut lose it's air on one side once, and I was doing some decent boosts. When I first went out I was nailing these airs, and after 4 or 5 I started crashing because the kite would not redirect fast enough. I thought it was my technique, and being very stubborn I kept trying. Until I crashed so hard I heard two little pops in my knee. That was last year. Came in and realized the strut had blown and it would not fly properly.
Kite designers spend their lives fine tuning every little aspect of their kites, and every square inch matters. So under inflated kites, lost struts or battens, they matter. And unless you are a total noob, you should feel when something is not right. The kites will fly like hairless dogs. I would not recommend flying the kite without the struts properly inflated.

I'm forever having that limp strut feeling on my early model griffin. It doesn't have a center strut, but has 3 either side. You can normally feel something is wrong with the steering and looking at the kite you can see the kite is fuller around the limp member. Unless its really windy I still stay out.

One particularly light day I had a really good session. On coming in both middle struts were flat. I guess in light weather you have trouble going upwind anyway, and kite movements are correspondingly slower. As long as things are balanced you won't notice much difference.

Why don't you try it next light weather day and start off tweaking the middle strut/struts and let us know how you go.