Florida: State decal only, one, port side of vessel.

Illinois: State decals only

http://ws1.coopfish.siu.edu/Stat_rul/ILLREG.htm

A vessel that is covered by a valid marine document must display
current expiration decals, but is exempt from the requirement to
display an Illinois registration number.

Note: For Federally documented vessels, the Illinois registration
decals are to be displayed on either side of the Federally documented
name of the vessel.