[Suzuru]

Your trill skills definitely improve with 1 hand, it just takes time, it was 3 months since I took spread and only semi recently I am able to hold fast streams(especially left hand), like Quasar, almost FCed it, 505 combo Delirium. Remember, you won't get good over night or even few weeks. Just have to keep hammering away and you will see fruits of your fun labor* ;p