The sled mounted camera is always a good choice. You can kludge skate blades to a doorway dolly and have someone that knows how to skate fairly well push the dolly.
Another idea is to use a camera mounted on a radio control helicopter. There are several companies that do this, and it is best to hire one of them and not DIY.
I'll second the elbow pads. And strap on traction cleats for street shoes can be bought at Cabella's, or other outfitter type stores. I've even seen them in the Hammacher Schlemmer catalog. If you spend a lot of time standing around on the ice, your feet are going to be killing you after a while due to the cold. It's a good idea to have a bunch of anti-fatigue mats handy.
Scott Sheriff
Director
http://www.sstdigitalmedia.com
"If you think it's expensive to hire a professional to do the job, wait until you hire an amateur." ---Red Adair
Where were you on 6/21?