I doubt that snares are a useful option when you move. IMHO it´s a waste of time to put them out for just a couple of hours in unfamiliar terrain. You have to look carefully where the animals come and you have to set up the snares and collect them before you move. This may well mean to invest some sweat. It may be better to rest instead. The odds for catching something that way are small at best. Beside of potential waste of water it could have a negative effect on your morale when you don´t have success.