Ok - so I had a brain fart - decided to share.
Problem - wind too light, kite (LEI) too heavy to fly .
What if - you filled it all with helium - I know, it's under pressure so it may not really help with the weight issue.
BUT - what if you where to put in inflatable wedges (with helium) in the spaces between the struts - as thick as the LE in front and tapering towards the leading edge. I am not an engineer so figuring out lift properties of helium vs added weight etc. is not something I have the slightest clue about... the wedges would not have to be super inflated and they would be there to provide two benefits - reduce weight AND the wedges could be configured such that they provide the same properties as twin skin foils - making the lighter kite more efficient flying and providing better lift.
could be a simple retrofit kit - velcro your helium lift wedgies when you need to, otherwise fly regular. Yeah, I know, now you'd have to haul around a helium bottle, but look at the bright side - you wouldn't have to pump up your monster kites any more AND you and nearly everyone on the beach would be hysterical from everyone sucking the helium out of your kite and talking funny when you are deflating and packing up...
Free idea - if someone makes money off of this, give some of it to charity and I'll be happy - I'll also buy the kite!...