For information on fisheries with facilities for disabled anglers in Ireland go to:
Couldn't find much fishing for disabled anglers in Clare however the western shore of Lough Derg is in Co Clare and that means a heck of a lot of fishing water.
At 13,000 hectares this is a very daunting prospect to fish. Best known for it excellent coarse fishing with monster pike (there is a tale of a 92lb pike being caught) and great bream, tench, roach and perch the loch does hold good stocks of brown trout and a species of trout called croneen that are unique to Derg.
There are a number of stands at Twomilegate for fishing if boats are not for you or you have a disability. See the screen shor from Google Satellite below, there are a lots of suitable stands.
For information on guides and and boats got to Fishing In Ireland:
See Lough Derg above.