I always check the speed twice. It's probably the most important step in a solution, especially if you're doing a quick and dirty solution on a fast moving target. If you're at a reasonable range (2000-1500 is my preferred) you can fudge a little on AotB, especially if you make it a habit to always try for 90 degree attacks angles. After awhile your eye gets sharper at guesstimating. Goodhunting.
