You have my sympathies and I can relate, even at 190 lbs. without gear! One of the greatest barriers to ready advancement along the learning curve can be marginal wind and too small a board size vs. rider weight. I commonly see guys out trying to milk marginal conditions with too small a board and wondering what's up? Bigger can be better!
I have been prone to carry a couple of boards, one for moderate to high winds and one for light winds. I have heard good things about the Spleene but have yet to try one. My current light wind board is effective and even handles well in waves and with higher winds. The last is not recommended but sometimes it goes from light to stronger in short order. It has a smaller board feel as well.
Anyway it is the Underground FLX-XXXL developed between the New Zealand manufacturer and the guys at Extreme Kites in St. Augustine for Florida conditions.
More at:
http://tinyurl.com/2pcfms
