My coach says I'm too flat footed, that I need to be more on the tip of my toes. I don't really get what he means though. When I try to do it, it seems like I'm always on the border of losing balance. Anyone have any suggestions or exercises that could help me, it would be very appreciated.
In most cases it means your agility isn't what it should be yet. Basically anything that requires you to move around quickly would help. Play some tennis, run backwards and sidewards, do ladder drills, etc.
It sounds like you just have to condition yourself mentally to stay on the balls of your feet. It could also, possibly, be a situation where you need to strengthen your calf muscles through agility drills and the like.
Usually being flatfooted means being immobile. He could stand on his toes but he'd probably still be immobile. In my own case it was simply not being agile enough. You don't fix that with a simple exercise, it improved over time by sparring, shadowboxing (with lots of movement), road work (not just forward, switch directions a lot), etc.
What he probably means is that you are flat footed when you are punching rather than walking around on tiptoe. Punches are "done from the toe" i.e. when throwing a hook you should pivot off the lead toe. A straight right should see the back of your foot come up etc. You shouldnt be standing on tiptoe as you will be unbalanced.
Well he did mention me being ''heavy'' when I move. Like my feet are just too planted strongly on the ground and it's making me slow and heavy on my movements.
Skipping. Stay on the balls of your feet, alternate between each leg and bring each leg up as far as you can without straining yourself.
Two things. When you jump rope, always do all you can to remain on the tip of your toes. When you start getting comfy doing so, try moving around, either to go to someone, or moving to your left and right, while jumping rope. This will give you some control. Then, in the ring, practice shadow boxing on the tip of your toes. In the beginning, you may find it hard to really move around. With a bit of practice, it will come.
Do you mean really really on the tip of my toes, or just feet on the ground but more weight on the front of the foot?