Become a qualified MBLA bike leader and guide.

Shameless plug time again! If anyone wants to become a qualified MTB leader and guide, Rock and Ride Outdoors have two spaces left on their November 10th and 11th MBLA Trail Cycle Leader training course. There is also a TCL training on January 19th and 20th 2013 and assessments throughout the year. Contact ian@rockandrideoutdoors.com for details.

Cheers.
I did this with Ian in September and it was well worth it. Ian is very knowledgeable and an excellent teacher.
Also, there are some great trails in Tollymore which you get to mess around on.