I use the £10 Smarty deal as well. Decent basic coverage all over Donegal and Cork, so I assume most other
locations in the south too. Added bonus is I can tether to iPad etc and also put the sim in the mifi and stream to my TV via a cheap Roku box.
Worth thinking about as it is a rolling monthly contract, so it could be suspended over the winter if you lay up your van.
Davy