Half-Washout In Turns

The last time I was at the track, I decided to really focus on weighting the outside peg and getting my weight on the front wheel.Now after a bit, I really felt like I was speeding up, going around the corners so very close to washing out, but never washing out. I noticed that the front tire was really flingin dirt. It's almost like having a front tire skid, but more controlled. Now, I figured there might be dirt building up in front of the front tire and that that might slow me down. Should I try to turn like this, or avoid having the front slide or skid at all?