Just got into HP'ing, have only done 3 so far, but I am planning on going to Mt. Marcy and MT. Frissell this summer. However, I have a Border Collie who I just hate to leave behind. Can Mt. Marcy be done as a day trip by a very fit Border Collie? For reference, I would not take him to Mt. Mansfield as the last section there is a little bit of scrambling, and have not been able to take him on some gorge hikes in the southern Finger Lakes because of the climbing, either. Aside from the physical, there is also the legal and decorum issues to keep in mind.
If it can't/shouldn't be done, are there any decent day kennels in the area? TIA for the help.