I'm very new to Honing but I knew that my bevel was set when I felt the suction between the blade and the stone. I believe but could be wrong that that is what stiction is. Like I said I'm very new to honing- as in 1 successful hone!. Please correct me if I'm wrong because I'd like to know what it is as well!
Basically, when you get that feeling that the blade is sticking to the hone, it's time to move on to the next hone. When you are on your highest grit hone and get the stiction, try a test shave. Usually a good indicator. YMMV, thlugh.