I am surprised these canvases have been used this much... considering that people tend to lean towards Money Glitch Maps.
The new maps make it hard as hell to do the monney glitch due to the forge filters, one way to fix it would be to put a delay spawn on them
Well, that is true, I can see why considering they make it harder to see and because you can only spawn 1 of them.
You can place more than one but it's best to do this after you've finished your map. What you do is once you're done, save/quit then restart, place the filter you want before doing anything else, then if you want another one, save/quit/restart. Same trick used when you use the max amount of something and accidentally delete one of them.
Did you know, someone found a way to avoid save and quit glitch trick... That surprised me alot, because now that cuts down alot of time it takes to make a map!