Alan,
It works. In our first race on the boat we were expecting 5-10 and got it. I tuned her and sailed her like a scaled up J24.
Medium heavy settings for a J24 are about 800# on uppers and lowers, and for 5-10 it's 400# My J30 tuning guide calls for 2000# as an all around setting. I assumed the 2000# to be medium heavy and cut it in half for 5-10 to 1000#. With a somewhat limp headstay she powered up very nicely. We trimmed 6-12 in. off the spreaders depending on if we were toward the 10kt end or 5kt end respectively. I kept the top telltail on the main just a verge of stalling.
We won the race in an 11 boat fleet with a few very good light air specialists. Seems J30's go in light air just fine! Best part was rounding the last leward mark right behind a hot J29 from another fleet and beating him to the line up the final windward leg.
Try it! You'll like it!
Mark
