Every other day method

Ok ladies, I might be acting a tad OCD about this, but how do you time your every other day method to match up with your opks? I usually get my positive opk on cd 11, 12, or 13....I know it's important to bd that day and continue until your temp goes up, but I'm worried the days leading up to that will wear out dh! He is training for a marathon but I'm trying to increase our odds this month! Usually we wait until the 3 best days in a row...but that hasn't worked so far.