Doesn't sound right to me. If you've got the test on Tuesday, it's too late to change technique that drastically, so I'd concentrate on enhancing what you're doing already.
The key I've always gone with for slow manoeuvres like this is to keep the revs highish (for SV, 4k is probably enough - it's been a while since I've ridden one) to limit the risk of stalling or bogging down and use the clutch and rear brake to limit speed.
The key thing though is the one that no-one believes - the bike goes where you look, so get your eyes away from the front wheel (or the cone you're going around on the test) and turn it as far around in the direction you need to go as you're comfortable doing.
http://www.youtube.com/watch?v=KtXBOA0_d3E is a good example. Once he's got the bike turning, maybe 45 degrees into the turn, the head comes around to look at the opposite cone.