Do not use snipe on Bigfoot

As long as you deal half the damage before the F/P comes, you should get the drop.

Just a little math: 5613.03 average damage per strafe (wdef and lvl diff included)
That means 5701 shots till its dead at 84 shots/minute is
67.86 minutes.

Although thanks to eagle I can pretty much continually attack it, there's still sometimes it gets me into a corner.

So pretty much, I have to attack it constantly for 34 minutes to get the drop. >_< I'll wait till I'm leet awesome first, lol