Dracop.... learning the "heli loop" or down loop is a good idea preceeding the Mega... to avoid swinging too far forward under the kite and having it roll out - espespecially in surf, where you could get thrown into your line or fall around you...
You say you need to start earlier than skinny blokes lol
Its not about wieght - its learning by feel, what percentage of "Lift" power is left, going upwards...
For example... leave it to the last 5% berfore the top and your gonna get a Heli loop.
If the wind is constant and strong on the way up / strong bar pressure... and does not drop off etc
then youd be good to pull the trigger at 70% the way up - relying on that 30% for the megaloop kite speed to go all way round.
Where you get spanked - is in a deep mega loop with no bugger all power - the kite backstalls and you both fall out of the sky and destroy yourself.
The 9 and 7m Screamers are awesome for doing them because there very powerful for their size, as well as catching you for a softer touchdown than C kites..
Most importantly for everyone (including myself) if you know its too late to pull it - DONT
Jesse richmaonds gnarly wipeout in the red bull comp is what happens..