Inexperienced angler / guessing fish weight

Ok so when I catch trout I weigh them I use the scale with the lip grippers does the badly hurt the trouts jaw? Here's a friend of mine with it

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How to Calculate a Fish's WEIGHT WITHOUT A SCALE

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Acf test - Anglers West

Reply to @aaronlfc7 the mahi is not my biggest but definitely one of

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Morrison bags 27-9 for Day 1 lead on Sam Rayburn; Castledine inches closer to fifth AOY - Major League Fishing

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Land more fish? 5th best bait ever! Try to hang your C-rig? – BassBlaster

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