but you probably ought to find out what caused it to blow to begin with.

Yeah. A hard jolt like hitting a pothole wouldn't usually cause the fuse to blow from just force alone. It likely blew because a 12v-positive wire touched a ground somewhere.

Another thing to check: Open the empeg itself and make sure the shock mounts are still intact, per the drive upgrade guide. If the drive tray has come loose, that could be the very thing that's making ground contact.