I agree with the comments here. Here my $.02.
- Skis, especially directional ones, ski best are recommended. The ski was designed with the mount point to be where the ski turns and carves the best, and anything outside of +1 will make the ski feel really hooky and not turn right.
- That being said, +1 or +2 could be viable- but are you really skiing switch and landing switch enough to mount any further than that?
- Why not just sell the ski and get something meant to be skied more centered? It helps to have the right tool for the job. If your style of skiing is more centered, then get a ski that supports that style- and not something super directional like the pioneer.