Hi Colin,
Boosting huge isn't just one thing, there are a heap of different things in both boards and kites which contribute to big boosting.
Technique- Holding an edge at speed under complete control when you are really overpowered in usually choppy water.
Board- Usually something that can handle chopy water ie, a softer flex with a nice hard rail, single concave and larger fins 50mm +.
Kite- A boosting kite usually has big power either static (Parked power) or Dynamic (apparent wind power). It will also have good depower. If in a static power type kite such as Core GT, you need to have complete depower so you can shut it almost off when over powered, or, in the case of the dynamic power kite such as an Ozone Edge II, the ability to be able to edge the kite to the neutral to depower it. This style of kite often doesn't have complete depower but you can slow them down to reduce their power as their power comes from speed.
There are also two types of going big. Kites that will throw you up there like a rag doll to heights of nose bleed, and often drop you just as fast

, and kites which will lift you up, not quite as high as the other style but will give you crazy hangtime and really nice floaty glide style jumps with a softer landing.
Truly massive comes from timing, control, kite skill and confidence. Timing because jumping big is all about the take off which is a product of timing mostly, control of the board and kite in raging conditions, kite skill of knowing how, when, and where to position the kite for maximum effect when jumping, and finally, the confidence to go out in really over powered conditions AND CONTROL IT!
Three examples of kites of different types
Going High : Core GT 7m in 35 knots
Going for Hangtime : Ozone Edge II 11m in 30 knots
Not designed for going big : Eclipse Kima (Wave Kite)
Like I said, there is a lot to going really huge, and as a novice you need to work on the basics before worrying about the technical advantages of performance wings.
Work on your edging and take off, it's where big boosts begin
www.kiteboardingschool.com.au/index.php/intermediate-rider-tricks/tip-1-boosting-better-jumps.htmlHope this makes sense.
KH