Video shows how to fillet sand seatrout without an electric knife.
https://youtu.be/2Cb9CSgtRbE

I clean them if I am going to eat them the day they are caught. Otherwise, I release them.

I can see that, especially if your preferred recipes (grilling, frying) require them to hold together. Scaling them and leaving the skin on helps them hold together through a freeze-thaw cycle, as does freezing them quickly. We use the basket in a chest freezer to get rapid freezing.

Also, fish that don't hold together well after freezing are a great choice for fish tacos. These specimens were caught in a pond that was cut off from the GoM and likely would not survive the winter if released.

That's how you do it and they are great eating but need to change your title to "How To Filet A Sandtrout Slowly" Ha