If you could find a nice basket to use, that would be nice. Be cautious you do not get your basket/tray contraption too heavy and max out the scale you wish to use. I don't know much about scales. Most of them can tare out the weight of the tray, but a heavy tray may max out the scale's capabilities before the tare can happen. I'd make sure the scale can weigh up to your heaviest potential fish and the tray apparatus with some weight to spare.
