The biggest mistake people make is blindly stretching.
The screen mentioned in our last post (add link) is good for rowers who want a quick pass or fail test. For those who want a more advanced, specific number, here is a way to quantify your ankle range of motion.
Here is an easy to do screen for your ankles. This can be done alone, or in a group setting. All you need is a wall. Conduct the screen with or without shoes. With your foot a fist length away from a wall, kneel and drive your knee towards the wall without allowing your heel to rise from the floor. If your heel stays down, your knee and arch don't collapse, and you touch the wall, you have 40-45 degrees of ankle dorsiflexion (the recommended amount for rowers).
Experts within the rowing field share their knowledge.