Thanks Keitha333 and dew042...so if I'm hearing correctly the appearance, smell and taste of sap really should be my indicator? I already pulled my taps last Thursday as I noticed elongating of the buds and I already have 4 gallons of syrup now but I'll try that next year.
Part of my reservation to continue was that I collect into 5 gallon pails so I didn't want one bad day ruin a week. I'll change it up next year to start dumping into separate pails when the season nears the end to avoid the anxiety.
I also find it interesting that you say the sugars are just getting started dew042...that's all I tapped just 20 miles south of you and consistently got sap from 29-Jan until I pulled them on 14-Mar. 178 gallons from 10 trees boiled into 4 gallons of syrup. Would have likely had another half gallon if I hadn't burnt a 15 gallon batch a couple of weeks ago.
Thanks for all the help and can't wait until next year already!
-Jeremiah