[cdavis]

You will work through the ankle pain. Its partly untrained muscles and partly stretching ligaments etc that are not used to the force the fins put on your ankles. Just keep practicing, stop when it hurts and start again the next day. It will be ok. Exception: Some people's ankles won't tolerate cressi's flat blades. They do much better with an angled blade, replaceable foot pocket like an Omer or similar. Assuming your Cressi's are the LDs, they should be no problem.

Connor