The somewhat popular blue blaze from Gorham NH along the Mahoosuc trail to its junction with the AT (the Centennial Trail) is currently in flux. The trail starts at the railroad trestle about 1/4 mile north of Hikers Paradise and used to go over a hydro dam before heading into the woods and up to the summit of Mt Hayes where the AT comes in from Shelburne. The blue blaze is used occasionally as a way of avoiding a long hitch back to Shelburne or occasionally by SOBO's who need to get into town quickly. The other use is that there is a small pond (Mascot) with several campsites about a mile and a half in that is a good place for thruhikers who cant afford to stay in town yet need to hang out waiting for others.
The new owner of the dam has fenced and gated the dam at both ends, there is a detour in place to another bridge up river but it is not blazed and adds about 1.5 miles onto the walk. I suspect that at some point the trail could be relocated to cut some of the extra mileage but it will be a fairly major move.
This was a FYI - no need to debate the merits of blue blazing