Basically what the title says. This is the only class where I seriously have trouble with.... I like scrapper cause of Burst. Then again I like Dirty Fighting with the DoTs.

I currently found also that a 18/0/23 Spec really is effective in PVP, but I just would like to know more on how to use this class much more effectively. Thanks!

Dont use the DoT spec. it's useless since your opponents can just cleanse them away(if they have half a brain at least).

Go Scrapper for Scoundrel DPS

Dirty Fighting can be nice if you spec for the reapplying bleeds. It can be very annoying for any other stealth class you come across.

For pure DPS though, nothing beats Scrapper. Pick up Flechette Round, and try to get back into stealth quickly after you go through an initial rotation. The damage potential drops off shortly after you get through your 3rd or 4th Sucker Punch.

You could do a hybrid with Sawbones. Get SRM and Sucker Punch. It's not the best for damage, but you can keep heals going and still dish out some damage when need be.