I don't think they want you getting anymore trophies, 'cause you're supposed to only have the key badge anyway.
For hardhats, just make new profiles, start the race, then exit, go back in, go to "towing the line", and keep exiting and going back in until its the loader or w/e its called. Then once you get it and win the hardhat, delete that profile and do it all over again. Again, and again. 13 times in fact, it was super fun. Not. But the agents one was 15 times so...
Wut? I got 10 hardhats in like 13 tries on the same profile! ( becasue of the fire trucks)
