If you're looking to purchase a 1-8x24 scope a good one is the Burris 1-8x24 XTR II - a bit heavy but it's a mighty fine scope - I have one on my AR. If the Burris XTR is on the expensive side for you, the Vortex 1-8X24 is less expensive and I've read good reports on it, for whatever that's worth.
For coyotes at 100 yards or less, I would think the Aim Point Micro with 2moa red dot would be the ticket, as it's extremely light, fast on target and can be shot as accurate as any 2X scope at 100 yards.