Learn from ol' elly, you got to start conditioning people about a week before. I had one going a while back about the new Hamilton stadium using a render of the proposed New York West Side stadium for their 2012 Olympic bid. It was all shiny metal so of course I used the tie in with the Steel City. Hardest part was hiding the NY sign on the side of the building.
I was thinking of doing one this year about Calgary but the fan-made cowboy hat arena and horseshoe stadium were too well known.
It wasn't an April Fool's joke but one of the best/worst scams was the guy who posted
"leaked pics" about a 2026 Canadian WC bid. I knew it was a scam right away because of my familiarity with stadiums and soccer but a whole bunch of people bit, including mainstream media.
I didn't think it was very clever, for instance he had LA's Farmer's Field as a render of a proposed new Toronto stadium and he had the Moncton stadium sitting in for a new Halifax stadium (among other errors) but few seemed to pay attention. I also knew because there was a little known render that I had run across for a new Saskatoon stadium, the scammer used that as a new Calgary stadium. Anyway he hosed a lot of people who should have paid more attention.