An avalanche can be triggered anywhere on a slope. If you have been gathering good data and evaluating the snow in a variety of locations throughout your tour, you will have a better assessment of the overall snowpack stability. Make your own decisions. Just because a slope has been skied or sledded does not mean its safe. Put your own data together and base your decisions on this.	If you have any degree of uncertainty, be conservative. You can still have an awesome winter backcountry experience choosing a lower angle slope or different route.