After reading a ton of crap about how this kite and that board perform in light wind I felt compelled to step up and mention SKILLS. That's right skills.... Riders that routinely ride in light wind probably will develop more efficient kite/board skills than those who ride in perfect 12m conditions all the time.
I ride with some guys who are VERY efficient riders. In contrast I am not very efficient. They are lighter than I am, but still they are better riders. They can ride 122cm boards and 9m kites when I am on a 132 with a 13m. Yes, I weigh 18kg more than they do, but if I was a better kiter then I could be out on an 11m kite when they are riding 9m. I find myself working the kite a lot while their's are parked. I know it is a combination of kite and board skills. Mine are improving and I am now starting to narrow that gap.
Now that I said that, if I were to go out and purchase a "lightwind kite" (No brand given). Do you think I could get more of an advantage? If I had it my way I would kite 7 days a week and improve to the point where I didn't need to cheat with equipment built to equalize the game. Unfortuately that is not reality.
I only started 2 summers ago and started with a torro II 16m, which is a bad kite, Once i got my Nemi 21m, i feel i progressed much more cause i was able to ride on days of 10-12mph, where as the Torro II 16m, I could not ride till it was blowing like 17mph, (no low end on that puppy).
I dream of being able to ride a 12m everyday....maybe i would be better then?
"A bad workman blames his tools"
Of course skill is a big factor, so is attitude.
Is the glass half full or half empty?
However the gear difference can be felt once you have reached a certain level, and a pro will also be handicaped if he can only use one rigg, instead of the right one for a said condition.
There is kind of a "Zen" thing to light wind riding. It's all about building up enough speed to take advantage of apparent wind and then maintaining a delicate balancing act. Some days the magic works some days it doesn't. Of course equipment counts too.....flat boards.......light, efficient kites.....low body weight.......
I got a Contra 19.5. A great lightwind kite but it's also improved my riding loads, because I got out on those days I'd normally have to be sitting it out on the beach. Good kit won't automatically make you a better rider, but may help you learn quicker.
If a 13m is your largest kite the YES a bigger kite will help TREMENDOUSLY!!!!! Rider skill won't help much when you're super underpowered on a 13m. OR get a bigger board. Your choice, but in the light stuff a 13m won't cut it with a 132cm board period.