..."Maybe the tournament can provide hawg troughs each uniquely marked with a number or sticker to prevent competitors having the chance to tamper."...
Tokens or cards are given out at registration and must be in the photo when taken.
Yellows, Halibut and the like will always be a side-pot and separate weigh-in or measurement.
There will always be cheaters...and tape measures can easily be altered or painted too...this Hawg Trough method seems pretty good the more I research it and Hobie seems happy with the results of their World Tourneys.
Maybe Andy and OEX can start stocking the floating, pre-lined ones. I think they retail for about $20.
It looks like it might take a little practice to hold a fish down on the board and take the photo.