When you mention a trail of tracks - were they in a straight line or scattered all over?
Because the pattern of how the prints are arranged sometimes tells you more than the actual track itself. With a marten or mink, for example, when they bound through snow or soft ground, you get a really distinctive paired chain - like two lines running side by side. Squirrels have their own recognizable pattern too. But a fox or a moose leave tracks completely differently.
When I was looking for a fallen fence in the woods behind my house, I noticed a straight neat chain of tracks on damp earth near a trail - turned out to be a mink. Then I saw the characteristic mess nearby from a wild boar that had been rooting around in the ground there. If you go back to the same spot in a couple of days, try to photograph the tracks up close and from different angles - when you're looking at an actual print with details instead of just a description, it's way easier to figure out what made them.