Not tried it myself, but some guys im my group in last season did. They totally enjoyed it, probably worth giving up some drinking time for! If only to see how the other half live!
The snowboard taster is done so it shouldn't get in the way of anything else. It usually starts around 3 o'clock, straight after ski lessons. If you want to do it some other time that can be arranged as well.
Steve
Usually a half day. This is classed as 2 hours. Board, boots and 2 hours instruction. If you have any energy left afterwards then you can normally keep on practicing. Costs 15 pounds per person.
http://www.bulgariaski.com/pamporovo/snowboardtaster.shtml from this site for more info or call in the Snowshack direct when your in resort.
Steve