I'm no fisherman, but this little thing fills the gap between a postal scale handling a few ounces and the bathroom scale, intended for people. It seems to be quite accurate enough for posting packages, etc. It should be noted that the price is more than reasonable.
Oh ... it should also be noted that "hanging" does NOT have a double "g". LOL

First, the positive points: this scale is compact compared to other "luggage scales", and the price is more reasonable than most other electronic scales.

However the negatives are:
1) It does not lock in the weight of the item so that you can unhook and hold the device up to read the weight, one must lift the scale up to eye level with luggage attached in order to read, which brings us to:
2) The strap / handle is very thin, it galls the fingers with anything over 5 lbs attached.
3) The hook is much too small to fit most luggage handles, may be good for fish, but one must figure out a work around depending on your luggage design, or resort to shoe laces to fashion a sling for your luggage handle.
3) Construction is flimsy, the old adage "you get what you pay for" ... in this case I got less.

I have been using a dial type scale from Magellan Travel with good results, it corrects all the flaws in the above, a bit more bulky, but has an added advantage - no batteries required, currently $9.85.

This little gadget is very compact and has excellent accuracy and resolution. My only criticism is that it does not have peak hold.