Can you imagine the time and effort it would take for an 800lb behemoth to do that? And how slowly they'd travel?
I hope the pictures I showed demonstrate the impossibility and point out one of the main reasons why Patterson and Gimlin fled the Bluff Creek scene so quickly, drawing people away to view the film instead of staying in Bluff Creek to answer questions and having the tracks prove up on their claims.
Insofar as disguising tracks, you cannot. Anything you do is going to disturb the surface even more. On one of my most important scientific source television shows (Gilligan's Island) they were showing how to cover-up their prints on the sand with a palm frond. All that does is show someone used a palm frond to sweep over tracks. You need a rainstorm or two to do the job.
I've had occasion to need concealing my tracks when I was visiting certain plants growing here and about that I needed to water every couple of days and didn't want to make a path to them. I walked in the stream on gravel to a point where I could use the branch of a tree to hoist up from the bank to swing far enough that they would not be noticed from the creek, as if anyone had been there for the last 50 years anyway. Just being super careful. Instead of having a cluster of plants in one spot, so easily sticking out, you put one here and there that blends in better too.
Patterson and Gimlin, if they did not make perfect tracks in one setting, could not go back and fix any mistakes. You aren't going to be able to walk in exactly the same footsteps, although wolves are amazingly good at following in each other's footsteps - I have seen that for long stretches in the snow that fooled me initially.
So I think if they tried, it would have been immediately apparent to themselves that they would be found out, especially with the way Patterson shot his mouth off. Their story involved themselves, bigfoot, and horses. That involves too many things that all have to be coordinated perfectly, with one take, and there are just too many things that can go wrong, not just the problem of where they start and where they end.
What you end up having to do, and I have been in this situation too, is lay down so many tracks every which-way that nothing can be followed. Like say people with badges are trying to figure out where you hid something, and they've really got the drop on you, they're on their way in and you have very little time to act. Just put down a blizzard of tracks all over the place, then put the item in plain sight. Sit on it at the fire, and keep inviting them to come talk to you right there at the fire.