There are a few good spots on the north side of the lough but i couldn't give directions - on the south side the bay between greenore and carlingofrd is great on a rising tide (watch from the hard shoulder - also check shilties lough, a wee inlet on the other side of the road which has produced whooper, kingfisher, little grebes, snipe, moorhen etc at very close range) next parking on the top of the road leading down to the marina is a good spot to scan for grebes, ducks etc. Further along at Omeath, again on a rising tide, the road that runs along the shore is good in that the birds are tolerant and you can get close (never found anything good there though), further along the road, the top of victoria lock is good especially for waders and ducks (green wing teal there last year) even on low tide...