I see that you use the MIT license on your curseforge page but i do not know how to use github so...
if you edit the mods.toml file (in META-INF folder) &:

• replace versionRange="[1.16.1]" to versionRange="[1.16.3]";
  & add the line;
  license="MIT"
  (I often chose to put it below the line ... loaderVersion="[32,)")

then this mod (& most/all 1.16.1/1.16.2 mods) will work on 1.1

6.3 - including older mods like WoolToString-1.14.2-1.0.0.jar
All I do is unzip, edit the txt file, re-zip (& rename the *.zip to *.jar) & replace the original file.
(I added the zip & txt extensions to allow the upload here)

fishtraps-0.1.1_[ORG^1.16.1,Ver,Lic].jar.zip

mods.toml.txt

nvm, it crashes randomly. This fix (hack, I'll call it now) has worked on mobcatcher-3.0.jar, StepUp-1.16.1-0.2.0.jar & even a 1.14 mod WoolToString-1.14.2-1.0.0.jar!
... back to the drawing board!