I was doing fally w/ blowpipe and void, and averaging a clue every 300-400 guards, my luck was terrible so i decided to try the imps just to chill out from my terrible luck. I think i ended up with nearly 4000 guards in 11 clues.
Loot wasn't included in the screenshot =P
Bitch, my luck is terrible. I've done between 2-3000 hard clues in my entire rs career, and only seen ranger boots twice and 2-3 robins. I've got more gilded and noted potions than a zerker w/ 99 slayer.