I have probably 50 gallons of sap so far on the 7 maples in my yard and I think I'll start boiling Friday after work. On Monday the power company came out and trimmed about 1/3 of my best producing maple tree down. The sap was gushing out of that wound, so I don't think the output on the 5/16" taps a foot away will produce too much. Not only was that maple tree my best sap producer, but it also had the perfect branch to hang deer when I butcher them. Funny how the power company forester called to say they wanted to cut down a couple of pines that I wanted gone anyway, but neglected to mention trimming the only tree in my yard that I like. By the time I got home the damage was done.