Polo mallets, tips and how to

What would you use to cap the ends? After watching Polo overseas I've started it up here in Auckland (NZ) just made a bunch of sticks, had 15 people turn up this weekend, which I'm pretty happy with. Still, could do with a bit more advice on making sticks though..

Good work on getting the polo going in NZ.

I think anything that could cap the end off and is secure would work well, ideally it should be a little convex and not completely flat.

If I had to make one myself and was starting will the cut tube section - I would buy a bag or tub of Polymorph - a cheap thermoplastic that you can dip in boiling water and when soft mould into any shape you want, when it cools it sets as an incredibly tough - but not brittle - nylon like plastic.