Oldway,
I had been shooting my 60# Hunter recurve three under, and was getting decent arrow flight, but I still got frequent flyers. I could feel it whenever it happened- it was my ring finger failing to go along with the plan. I have started experimemting with only two fingers (under.) Surprizingly, two fingers are plenty strong for the job, and it's very consistant, but I found I had to make some firm rubber pads to put into the finferstalls of my glove because the string pressure was too great. This appears to work well, but now my fingerstalls are a bit crowded. I'm going to buy a new, larger glove and put the pads into it. I have seen a few two finger shooters, but I'm the only one I know of to shoot two under, none over. After I have either shot a full season like this, or abandoned it I will report my results.