Eagle claw makes a trot line hook kit. These are about 2-3/o hooks.
I like to use them on 130 lb jug fishing line. All can be bought from Wal-mart. I have been taking my son out jug fishing and he has fallen in love with it.. We can set out some jugs and do some bass fishing while we're waiting on the catfish to bite.
My intent is to eat the catfish if i catch it (Unless it's huge) so I don't mind if they swallow the hook. If they swallow it and I want to release them, I take great care in cutting the line ot clippng the hook to try and make sure the fish survives.
Jug fishing is Fuuuuuuuunn.
Good luck!