In article .com,
says...

Just bought a comfort bike but the seat isn't comfy enough. It's 10x10
which I know is considered large, so I wonder if a gel cover would
help.

Maybe, a little, for a while.

What works is to ride frequently, several times a week, but not so far you are
sore after the ride. You will gradually be able to ride farther and farther and
the problem will go away. As you ride more the gel seat will become
unconfortable. A Brooks leather or any of the thinly padded plastic base seats
will work better then.

Sheldon Brown says much the same thing on his web site.
http://www.sheldonbrown.com/saddles.html