Last summer I caught several shortnose with flatfish. Spinners do well with shortnose as well but rope baits are better for longnose (actually a seine is the best for longnose). Since spotted, florida, shortnose and gators all have similar mouth shapes spinner types should do well on all of these.
Here's a video of a shortnose caught on a flatfish.
http://sitemaker.umich.edu/aquarium.society/files/shortfishing1.mpg
Here's a video of a shortnose caught on a flatfish.
http://sitemaker.umich.edu/aquarium.society/files/shortfishing1.mpg