Depends on what the deer are doing and why they are doing it. There are trails that will produce every year and others where things have changed or you just got lucky. Figuring out why they should be in a location is more important that how mony days your stand sits unoccupied before October 1. I don't care to go tornadoing out a spot the day before I hunt it but have killed a few truckloads out of stands placed the day before the hunt.