I too have not heard of saint Lawrence apple tree.
Spud, I think you can expect good results grafting, I grafted 31 trees and so far all but 2 are either clearly growing well or have some growth. Oddly the McIntosh I thought didnt make it a couple weeks ago seem to be doing well. The only ones I have concern for are the ones I had to do cleft grafts on. I may only get a 1 or 2 to take. If that is the case then I will have 26/31, not bad. Possibly 25/27 on splice graft and whip and tounge.
Maplecamp, are there any real ways to keep out moose and bear or are you at their mercy? Deer here are bad enough problem wouldn't want those.
2019- RO
2018- 25 taps made 8 gal syrup.
2017- 25 taps -built a 2x3 flat pan, and a fuel tank arch for it. 335 gal 7.34gal syrup.
2016- 15 taps, 4.3gal syrup boiling on cinderblock arch 3 roasting pans, 1 redneck trash can with a pot, and a turkey fryer.
2015- 4 taps 44 gals of sap made 2.25 gal of lite syrup.