In the early eighties I wanted to go ice-sailing. There was no time to go to large iced over lakes and use our DN. Being an avid windsurfer I thought that it should be possible to use the windsurf-rig and my skates and be fast on ice.
Picking up my gear I started playing on the ice. Together with my brother we quickly found that balancing the mastfoot on the ice was no problem. The boom is however too low for comfort.
The answer is simple and effective: Lengthen the mast with a rounded piece of wood. This mast lengthening lifts the boom to shoulder height.

Sailing is comfortable, fast and safe. We have kept pace with cars on the highway doing in excess of 100km/h.
As you wear skates you are very manoeuverable and are able to stop at any time. You can let go of the rig if necessary and because it is light nobody will be hurt.

You will outsail windsurf style icesailers easily.

How to make it.

Take a cilindrical piece of wood approximately 2cm larger in diameter than the inside of you mast. Make it fit inside the mast, for at least 10cm.
Shape it by hand or by using appropriate machine tools. Make an attachment point for your sail. The part resting on the ice the should be well rounded.
The eventual shape after wear will be V-shaped. Try not to make that, as nature will do the work more precise. The risk is that you end up with the wrong angles and the mastfoot will carve in the ice.

It is not necessary to coat the mastfoot with anything. The wear is not much.

You can use the stick skate in many ice conditions, even a little snow on the ice is no problem.
Always choose a spot where there are not too many skaters. You will be traveling in excess of 80km/h very easily. Skaters will be curiuos, You are responsible for their safety. Always wear a helmet. We have never made a heavy fall, but cracks in the ice can make you tumble. The sail will easily cope with crack but will you??

Using easily available materials it is possible to build a windsurfing style ice sailer. The design is presented on the idea's & design page. Basically it consists of two skates and a non carving front runner.
This non carving runner is absolutely neccessary because a carving runner will not allow you to steer in the normal windsurfung fashion, by heeling te sail more or less forward and using the sailforce to turn the icesurfer.
I personally use a braking system. This makes it possible to sail without the DN type boots, with scraping irons. These boots ruin your iceboard.
This particular design is very popular in the Netherlands. It featured in a winter issue of a windsurfing magazine. It works very well for its type and allows for all kinds of racing adaptations. The design also offers the possibility to fit different skates for different ice conditions (like all the iceboats).

Building a windsurfer style icesailer is withing reach of most skilled craftsmen. It is however necessary that you have access to welding equipment.

If you would like to build the design you can save the below drawing with the right mousebutton and build it, first click on it to enlarge. Text is dutch but that should not be a problem.

Only after starting to hangglide did I realize that my prototype was grosely overweight. When using hanggliding building techniques I am sure an increase in size and decrease in weight is possible.