Having copped some flack last time I answered one of these (flew through with minimal damage) I'll answer carefully.
Up n over/long and low have proved my most successful ray rigs.
A fixed clip down would be 2nd
Pulley dropper 3rd and as a last resort over rough ground, a pulley rig.
If you are fishing for the table, longer snoods and j hooks fished pennell style (minimum of 6/0s)
Hook size deters small fish.
Possiblity of deep hooking is high. Not really recommended anymore.
Mixed table and c&r
Long to medium length snoods, 4/0 j hook on the bottom, 4/0 circle as the pennell.
Vast majority of fish hooked in the scissors.
Catch and release
Medium to short snoods.
2/0 to 4/0 single circle hook.
Expect to miss the odd one, but never had a deep hooked ray fishing this way.