Gear ratios for no brakes riding...

Yes, but it just sounds like you need to practice. I ride 42/16 and can skid quite easily.

well i have been riding 46 19 but wud 46 13 or 14 be easyer to skid? and other tricks?

+1

I really don't think gear ratio is as important as technique, although it's definitely easier to learn on a low ratio. I learned on an easiesh gear in the wet to get the hang of it, but now it's easy enough to skid from the saddle, regardless of traction/gear (within reason). Having the right technique provides you with very good leverage.