Fair comment Jon. Have alot of experience self taking photo's. When working on a lake in France for a season I was catching alot of big fish taking self took photo's on a very cheap compact digital camera. The only fish that caused me problems were fish in excess of 50lb.
For those, I needed probably 13-15s as it requires 4-5 stages of getting the fish off the mat to a composed shot whereas a high forty one could manage 3 stages of gradual lift in 10s.
Now for a fish 25% of the size its a little easier. I have a Canon EOS 400D which again has a 10s delay. Leaving the fish in the water, mount camera on tripod, place bankstick approx 1m away from camera, compose shot using slightly greater depth of field, focus on stick, take off autofocus, set timer, take a tester shot to check composition, focus & exposure. Get & place fish where stick is, kneel next to fish reaching for shutter, depress, hold fish, put back on mat, wipe hand with towel to repeat. Use a dedicated flash to get better results especially at night.
Its a matter of practise & familiarity with the camera. Try a few shots in the lounge or garden - to your mrs' amusement. Probably be a few years when we can get voice activated shutters.
Cheers, Jon