Hopefully some locals will post how far up the tail at Boulder you have to drive as it is most likely about 2 KM up at the junction or to the upper parking lot on the Kirkup - depends on snow levels. Highway cams show dirt in town - so most likely the lower parking lot at Boulder won't have snow. Now that can change really quickly this time of the year - so check the web cams and see if someone posts where they are unloading from. If you have to drive up to the junction - or the upper parking lot - you will be ok with the trailer - trail might be icy so have good tires - seen a few rigs in the ditch over the years. - getting to the parking lot earlier will give you more parking otions. last weekend at Frisby they were unloading from the parking lot - not sure if that is still the same.
Hope this helps.
T
You could unload at Frisby parking lot on the Saturday, but by Sunday morning there had been rain down low and it was back to driving about 3km up the road before unloading. I haven't been on boulder yet but the parking lot there looked even drier/dirtier than the Frisby lot. Bit of rain off and on in town and at parking lot level throughout the week so expect to drive up a few km.
Happy riding