What is needed to get large mouth bass to repopulate in a pond? My boss has a pond and he has problems with not getting the bass to spawn, he talked to someone and they said its cause the banks are to steep? So he dug out a flat channel and made an island in the pond, so in this flat spot would the bass spawn? Most of the flat channel is probly 3-4ft deep with a small section thats a foot or so deep. Do you need to add rock of somekind or what needs to be done?