I've heard so many different stories - I think it's better to organise before you go - but if you take your own board, don't forget their is a handling charge of about £15
If you are going to Borovets try the Snek Bar "Sunski" for your ski and boot hire and tell him that Richard advised you and you will find him very reasonably priced.
Also he has renewed most of his gear this year so the quality will be good.
If you want his email or tel. no. please leave a message and I will email it to you.