(attacking every monster, at least 1-2 hits, in any given combat area, one at a time, making sure they no longer have full hp, purposely sabotaging whole areas against ironmen)
This will be a constant problem, and one that I guarantee will be the single most hated aspect of ironman...
You will need to place this down to 51% in order to side-step the certainty of griefing by the many, many asshats that play runescape.