I've been using a bulky attackers team for a while, but I've only just started having any real success (17-4, I'm in the 1600s) over the past couple of days with the following:
Dragonite @ Assault Vest
Adamant
Multiscale
252 HP/252 Atk/4 SDef
- Outrage
- Extreme Speed
- Fire Punch
- Earthquake...