Other than 2 hedgerows with 70 taps on 3/16" tubing, which have been great, our sap yield has been really low. It shows the advantage of vacuum on marginal days. Lesson learned is that more trees will be on 3/16" next year. Test has averaged 2.8%. We've made 40 gallons of syrup so far, 30 of which is dark. Excellent flavor. We boiled the limited sap several nights this past week to make sure it did not spoil in the warm temperatures.
Ian
New sugarhouse fall '06. 3x8 drop flue by Phaneuf. Kubota L2800. 260 buckets for 2012. 504 taps for 2013. 320 buckets, 207 on 5/16" and 200 on 3/16" gravity tubing for 2014. 2017: 280 buckets, 920 on 3/16" tubing, selling sap from 560 of that. Son Gavin is in 3rd successful year of selling maple equipment as MacK Maple Supply.