Well, think about it. Drain Punch is the only move Conkeldurr can learn that is affected by Triage. So you're wasting your any ability for one move. Why not use something that benefits the whole set, such as:
No Guard - For Dynamic Punch, Stone Edge, and Mega Kick
Moxie - Boosts Atk after a KO
Tough Claws - Boosts the power of contact moves
Technician - For Rock Tomb, Mach Punch, and Bulldoze
Neuroforce - Powers up moves that are super-effective
Magic Guard - To prevent status like Burns