I bumped into a guy from my lodge who taps recreationally as well. He does 2 gallons of syrup then calls it quits and normally he's done by now but he doesn't even have enough for a boil yet.
Is it wrong to feel a bit exonerated by the failure of others? ;-)
kidding, I don't wish any ill will on him or others but I am glad its not necessarily something I am doing incorrectly.
2014 - 6 buckets, 4 coffee cans and a propane burner - almost 40L of sap and 1.6L of syrup
2015 - 103 taps on gravity. Homemade oil tank arch and a Smoky Lake 2' X 5' hybrid. - 2.66 gallons of syrup
2016 - 101 taps, 550 gallons of sap, ~10 gallons of syrup all dark.
2017 - 138 taps, 225 gallons of sap, 5.55 gallons of dark syrup, still procrastinating on the vac.
2018 - ~150 taps, I lost track of the sap it was incredible!, over 20 gal of syrup, all dark.