NOTE for clarification:
Rule #1 applies. This has never been, nor will it ever be, A scale specific build. Anyone trying to make it one will get a 10 minute “Time out” in the corner with there preferred beverage.
The “Add On” prizes were offered up by their donors to sweeten the pot and share the wealth. I let the donors decide on the winners of each “add on” prize, based on what ever they wanted to base it upon.
One donor was giving a vehicle, and chose to give it to someone that used vehicles in their build. Another had a 1:20 size prize, and thought that giving it to a 1:20 build made more sense then to a 1:32 build, Etc.
The “Add on” Prizes I’m sure will grow every year, but the uncertainty of what they will be year to year, makes it impossible to set categories ahead of time, for unknown prizes. Donors offered up the prizes without even knowing whether the build was going to be rolling stock, Structures, or some other bizarre build.
With the “Build Challenge” being unknown up to the last minute, No one can get a head start on the others just to try to win a known prize.
Have fun and run trains.