I got .3 gals per tap last season with 77 buckets and 462 taps on vacuum. Most of the taps on vacuum were on red maples and alot of them were culls. It was my best year ever and could have been better. I noticed that the woods with old taps and tubing, about 250 taps stopped running about 1.5 weeks sooner than the new sections did. Reaming tap holes didn't help. This year all of the drops are going to be replaced in the old section before I add any new taps. The way that the syrup has been selling I need to make alot more! I would like to get up to the 1/2 gallon per tap number and feel that it is possible even with the red maples as my main crop tree.