Jugging is the easiest, with a stout line and hook, clorox jug, and rotting chicken for bait.
Some of my buddies probe for snappers,wading in the shallow end where the ceeek runs into or out of the lake, they usually are bare footed, and use a rebar probe to locate them then dig in with hands or feet and pull them out.
Grabbing snappers by the tail is a good way to loose some meat (your's) they have LOOONG necks, it's better to grab a stick and let them bite onto that, it will keep 'em busy while you bag them.
We used to winter in Dade county FL, and cruised the gravel roads that paralell the canals, the snappers would haul out and sun, some were gigantic with heads as big as a fist, 60 lbs was small.
Shot several with head shots 22 rimfire,only to have them slide back into the canal,
had to have been a reflex action 'cause they had to be brain dead. Some of the big females would be full of eggs, like soft ping pong balls a litlle larger and a shell like white leather.
If you are doing turtle soup a pressure cooker is the way to tenderize the meat , get out the bbq sauce and put some on the grill when doing burgers .