attached this SAMSFX fillet clamp to a piece of composite board and it works

SAMSFX Fishing Fish Cleaning Board Clamp is made up of stainless steel material, durable and solid for use. Great for hardwood fillet board, make fish cleaning, bait cutting for boating camping or home. The clamp holds down the fish by the tail for easy filleting, secures fish to a table, board or bench. Mounting hardware included 6 pieces Self-Tapping screws, easy to setup to the board. The spring on the clip is very sufficient for the job of pressure.

It can be mounted anywhere you need to fillet fish

Come with 6 Self-Tapping mounting screws, easy to mount to any surface

SAMSFX Fish Fillet Clamp

It works great on bait mullet, salmon, steelhead or smaller fish as well

BOLD & HIGH STRENGTH SPRING

The spring is very tight so it clamps down tightly.

The clamping force makes the clip firmly hold the fish for securely for cleaning and filleting.

We tested and cleaned 4-20lb Salmon and no issue holding them.

It works great on bait mullet, salmon, steelhead or smaller fish as well.

6 PIECES SCREW HOLES

Attached to the cutting board via 6 stainless steel screws, it provided screws result in a solid mount.

It havs a one hole in each corner but also a sliding one in the center of each side.

This allows you to screw the screw into the middle hole first, and then adjust the clamp so that it is positioned in the way you want.

TIGHT & SHARP TEETH

Fish Cleaner Clip can clamp the fish tail firmly, the fish will not jump.

It really helps to keep the fish's head in place while you worked the fillet knife.

It has a strong bite although sometimes fish tails aren’t strong enough so need to clamp on some actual meat.

Sharp sawtooth mouth grips fish pretty solid and doesn't let it go.

GREAT FOR SPINY AND BONY FISH

The cutting board is not included.

It can be mounted anywhere you need to fillet fish, when fly fishing, kayaking, camping or home kitchen.

You can also mount the clip on the hardwood fillet table or on the side of the boat.

A must clamp for safety and ease when skinning fish.

Constructed of premium stainless steel, it is anti-rust and corrosion resistant, durable to use
SAMSFX FISHING Fillet Clamp for Cutting Table Outdoor Sports
Fish Fillet Clamp for Cutting Board with stainless steel screws