wait, you have front brakes on your vulcan? use what your bike gives you, sportbikes have large front brakes, small diameter rear - use more front than rear. the old adage of ~80/20 is about right for me whereas it used to be 100/0 for a long time. i just started using rear brake at the track this year and have loved the way it slides around, nothing like you see on tv tho. if your brake disc diameters are about the same then that is going to be closer to 50/50, following me camera guy? before turn, as much as the front will allow, some back to keep the bike calm - it'll probably around just get used to it. in a turn, hold your throttle and lean more, or (on track) give it gas and drive it out, yea seems counterintuitive but it works. get to a track bud.