that's my story and I'm only 220lbs
crap for wind when I can get out
everyone else is riding on 12s or smaller and I can't get my 16 to pull me
my 2 best rides were on loaner switchblades from the shop
hey, guy! you are not so fat, as me, but I can kite from 13knots !!!
To you it is definitely necessary to get a normal big board, like
spleene door 159x45 or monster door 164x50.
and I think, You don't need a bigger kite at all.
for now I look for 10-11m kite for winds from 20knts.
I, like you, try to kite since 2007, but without normal board it's so boring (board i have in 2007 - nobile ext 143x48
now i understand that that board for me useful from 17knts) and in 2008 I forget about kiting, but when i got really big board airush square2 155x47 - it's for me like new page in my life.
I kite on airush in egypt, el gouna 10 days in winds - 15-30knots.
next my board is spleene monster door. it's wonderfull. I kite 3 month on this.
and as small board, I use spleene rip'39.
but for now I buy simple door(not monster) (159x45) and can kite with 15 rev from 12 knots !!!
in this year I kite maybe 70 days.
all this year I kite on SLINGSHOT REV2 15m 2009, fast, friendly, good kite for learning.
few weeks ago I try NORTH RHINO 18m 2005, it's very powerful kite as for me, and my wind range with this RHINO is 11-20knts, in 21+knts I afraid him
some my newest photos there http://picasaweb.google.com/malden.brest/ZOdMY#
other photos: http://www.facebook.com/profile.php?id=100000116031659