I’m reskinning 2 1950’s era instruments with thin calfskin and cooked sticky rice glue. Yes the clamps are strictly functional but work perfectly, and being made out of ipe wood, are indestructible too. The soft wood wedges compress a bit so they really stay in place and keep a tight grip. The clamps have been taken off this side since the photo and it has a wonderful bright tone.
If you are thinking reskinning is beyond your abilities, watch the good videos out there and give it a try yourself. I made those clamps and clamping board in a couple hours with simple tools. Thin calfskin is available on ebay and other sites as natural drum heads, just be sure to specify white and not the translucent amber, in order to keep the traditional shamisen look.
There is something very rewarding about playing one you work on yourself too.
Kevin
http://imgur.com/Z7Y5LnV