I haven't seen anything but what the manufacturers have to say about these different types of tracks. You have a 2" paddle track and a 2" finger track at 15" wide and 136" or maybe 144" long. The paddle track is supposed to be for "proven powder performance" while the finger track is supposed to be for "packed powder and hill climbing". The fingers are arranged mostly in the shape of paddles with a similar general angle pattern. (I'm looking specifically at the Camoplast "Finger" and "Challenger" for this example, but I'm really concerned with the different characteristics between these general types.) So I'm guessing that with a finger track you might gain some traction on the trail or anytime the powder has a firm base (and spring snow), but it won't have the pure powder-pushing power that paddles of the same size will give you, if only because some snow will slip between the fingers. The big question is does it really work this way in the real world, and to what extent? How much of each type of traction are you gaining and losing between these two? Anyway, I know nothing about this topic so any opinions are welcome. I was just thinking how we have so much more packed powder and hill climbing here and a very long spring season (last riding day was May 22) I might want to think about a finger track for one of the 136" sleds. But if a 2" finger track does not have as much powder traction as, for example, the 1.5" paddle track currently on the Vmax (which has an aggressive powder profile), then that is a problem because the Vmax has marginal pull in the deepest stuff as-is. Less powder traction would be unacceptable. I don't want to come up short in the fresh and deep because I switched tracks. And do the fingers really help where they are supposed to help or is it just a gimmick? Any opinions? Firsthand secondhand or overheard are all welcome.