The sap will still flow through a submerged line. I cut all my drops a little longer this year because I ran into the same problem last year. As the snow melted my tubing wouldn't reach my buckets anymore. I cut all of mine just shy of 3'. Then each year you can cut the old tap off and still have enough left over to re-use the tubing a couple of times. Good Luck
Pete Nightingale
Lisbon, NH
3 Teenage sap haulers & Plenty of friends and family to restock the beer fridge
2012 1 tap and a pot
2013 10 taps, oil tank evap, 2 gallons of slightly too thin syrup
2014 48 taps improved oil tank evap 3.5 gallons, ouch??
2015 88 taps 78 5/16" and 10 3/16" nat vac 40"x 48" Homemade Arch 13.25 Gallons
2016 100 taps 65 on 3/16 & 35 buckets 17 gallons + unknown amount of maple / Jack Daniels testers