New to polo, start here: a guide for beginners

Quick question on mallet production. Is it legal to stick a small bar-end or something similar on your mallet, or is it a little bit lethal? I thought a small bar end on the top of the mallet like this would give a nicer lean in goal.

I guess there might be some advantage to a longer bar end at the end of the grip for short shots/control. Just an idle though. So what's the consensus from LDN Polo?

Definitely not polo. I don't mallet hack much, but if I ever saw such a thing....