Both work, no question. But how many with trebles are you willing to lose is the question?
If your bouncing them of the bottem which one will hang up first
I have found that this is a very productive way to fish them for both Salmon and Steelhead. When they are not on the move for the most part they are holding to some kind of structure, so if you realy think about it snigles are the best, for me anyway

G-MAN
As far as the weedless goes, you got it going on.