Quote Originally Posted by Andy VT View Post
…it might make sense to double tap half of the trees one year, and double tap the other half of the trees the opposite year, so that you only have to visit half the trees each year for theoretically the same yield and same sustainability.
Not likely to be advantageous. On buckets you might get about double the sap with two taps on a LARGE tree. Typically you’ll get somewhat less than double and well under double for trees under 18” dbh. On vacuum you will definitely not get double the amount of sap from a second taphole. In many cases you’ll get about the same from two tapholes cumulatively as from one taphole, or maybe somewhat more if trees are bigger. Depends on the size of the tree and the vacuum level used.