RE: If you've ever had tennis elbow.....
I've had trouble with "tennis" elbow since 8th grade. For 5 years it's been on and off. Mostly from basketball injurys, not to mention varsity golf since 7th grade[&:] It started back up from falling off a snowmobile.
I can't shoot my bow more than ten times, without having to stop.
Rest is the best option, as you already know.
I feel you're pain.