prop choice for more thrust on 9.9 johnson

[northmansx]

Looking for a little advice in choosing a new prop for my 9.9 johnson. Currently i run a 9 1/2 x 10 that may have a little shaved off from grinding rocks in a low river. I am looking for more thrust to help push a heavy load such as 2 hunters, some moose meat and our gear. We use 14' boats and would like to get more speed or thrust out of our motor while loaded. Any suggestions would be great. thanks