I don't have any real problem with rope skipping, and you're right in saying that it's a good exercise to strengthen the foot, especially if it's done barefoot. My issue was that when you say 30 minutes of rope skipping, I'm envisioning you going out and doing 30 minutes of continuous rope skipping which is, like I mentioned, very general, very low intensity and highly aerobic; all of which would be things that don't need to take up a whole day's worth of training.
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