Have you investigated the possbility of grant assistance from perhaps your local county council or lottery funding?
Government money for sports organisations is distributed by the Irish Sports Council to the various National Governing Bodies (NGBs). NGBs would then distribute the money among members i.e. clubs, associations, leagues for expediture in various categories that the NGB received a grant for. Have you tried contacting your NGB? Do they have any assistance schemes for new or developing clubs?
One good idea I've come across is a sponsorship lottery. Here's an example of how one might work:
You need to raise 30k.
Your members sell 300 tickets at €100 a piece to whoever will buy - large companies, small companies, local shops/business, some may even be bought by individuals. As the tickets are only €100, local businesses who have even a passing interest should be tempted to buy tickets.
After all the tickets have been sold, you hold a public event at which a local celeb is asked to pick the winning ticket out of a hat.
The prize - whoever is picked out becomes the sports clubs main sponsor for the year. They get their name on jerseys etc, signs around venue, naming rights e.g. "whatever sports club sponsored by company X".
This is very attractive to businesses as for only €100 they may become a main sponsor and get loads and loads of publicity out of it. Effectively the winner gets €30k worth of sponsorship publicity for €100. Any company that wins the lottery is quids in. For the rest, its only €100, so not really concerned about losing such a small amount & you would probably put the names of all contributors on e.g. website, to give them some sort of recognition.