I have a Vmax and am 6' 5" no problems at all and i have long legs. The L is for the size of the seat i believe. worth checking as the small ones are a bit tight if you have a big ar*e
BFG
You could also consider non flexifoil kit such as PKD Buster Ozone Little Devil, Elliot Ekko or for more grunt race kites like razors, Libre Bora or Airea Raptors
Sell It !!! and consider getting a more high performance kite. I got very bored with the bullet quite quickly it does everything ok but is bland. Try Raptors, Bora's , elliots of a similar size to see the difference. But bullets are a good first kite
I'm 6' 5", but its not necessarily height but inside leg!!!. I haver a V-Max with standard down tube and fit in it fine. If you want a very comfy buggy go for the Cameleon I tried on out and if I had the money would have gone for that instead. However bits are easy to get for the Libre rather than the Cameleon
hope this helps
Dom at UFO Kites in Weston-super-mare stocks Elliots, I bought a 2.2 classic great kite and good for buggying in high winds, his details are on the wind and wheels website
windandwheels.org.uk
Im 6'5 and 18st, note your from Bristol. Buggys and kiters go to weston beach tuesday evenings Sundays when the light fades, you may be able to see try out various types. I know someone selling a chameleon for £320 which is plenty big enough
I have a bullet 3.5 for sale £165 with brand new lines fyi I am 6'5 and 18 stone and i can scud great with the bullet, jumping not so good !! If you're only 11stone you should have no problem scudding and getting air with the 3.5 and its fast enough to not bore you to death.