Fred, sorry about your bad news on otters.

However, in another way it is good news, because you have now figured out while you no longer have any 5# bass. Hopefully, you can rebuild your fishery back to that level.

Unfortunately, trapping and eliminating the otters is going to be a long job, and will probably be "never ending". Every time you improve your fish population to be better than what is in the swamp, then the otters will eventually figure that out and come to your place for the better eating.

I can't give you any good trapping advice. But there are multiple members that are excellent trappers.

You should probably go to the "Questions & Observations" sub-forum and click the blue button in the upper left that says "New Thread". If you start a new thread with a title like "Advice for Eliminating Otters?", you should get some good help from the forum experts.

Good luck on getting your fish population back into good shape!