Thanks Jack. You're tight, tomatoes are self pollinating so wind does play a major role in them setting fruit. Problem (or nice thing, depending on your view) is that the basement has no wind so we didn't know we'd get them to fruit very easily in our basement experiment. Wife was thinking of putting a fan which would help lots; I'd guess the fruit set we've seen so far may be the result of us moving the plants around by hand since they've grown so long (I'll try to post a pic later today) just to keep them in the planter (and especially the light). I've heard that greenhouse growers of tomatoes like to use bumblebees to pollinate because they "buzz-pollinate" flowers. Somehow, and I think they are the only bee that can do this, bumblebees can detach the muscles from their wings and then use those muscles to vibrate their entire body at about the resonance of the musical C note. That may allow them to exploit pollen from small flowers that would otherwise be unavailable to them. Like you, we don't see much for pollinators on our tomatoes outside but we do see a few bumblebees now and then. Wind is probably the largest influence.