My situation might be a little distinctive.  Have 4 screws in left ankle from rockclimbing accident years ago. As result, I am in precarious balance standing on left leg and I like to drive the foot control on the Motorguide Trolling Motor with right foot.  And I prefer to drive the TM with no shoes or sandals on. Much better sensitivity on the on/off switch.  That's fine when weather permits, but during rain gets mighty cold. - like it did yesterday!

Maybe some kind of boating or kayaking footcover which breathes so I won't get athletes foot?

Suggestions?

I wear the Ultimate Fishing Shoe from Cabelas it is mde by rugged shark

They are light weight, thin souled,and soft.. They breathe really well and are water resistnant ,not proof. I like them alot.

I think i Read on another site that Randy Blauket wears sandles year round. and if its cold he just adds socks? It is in an archived article there.

Maybe a wetsuit bootie? Once it gets wet, the layer of water between the bootie and your foot heats up and keeps you warm.

A watershoe should work, they can get wet and still keep your feet warm.

every shoe I get wet becomes a watershoe...lol.  I wear sandles most of the time and YES when cold with socks.  I have water shoes, but it is very hard to find comfortable ones for my feet.

I use a hand operated Minn Kota 74# trolling motor. I have a handle extenison so I can steer it with my knee. A power button on each side of the deck to run the motor.  Both my feet are flat on the deck, my hands are free to fish & I have never had a broken steering cable.

My feet or back does not hurt at the end of the day which is a big plus.