Maoraigh seems to fly in the same area I do, and I am familiar with the challenges of doing so. Bottom line is, if you know what you're doing, its perfectly safe. If you don't... you are just inviting trouble on yourself.
How to avoid CFIT is simple... don't go grubbing about in marginal Wx especially near terrain, always have a plan B, C or D if the Wx turns for the worse, be aware and get educated on how to fly in and around mountainous terrain (pay attention to the forecast... where's the wind coming from and how strong is it, cloudbase, freezing level etc... check the terrain on your chart for your route, how will the wind interact with this? Wind stronger than 25Kt at mountain tops can cause problems if you are flying nearby. Etc.), and FFS don't fly for the sake of it! If things look iffy go another day.
Fly safe everyone.