I have tried this before with some smaller baits and quickly found out that using the router atached to the table was not going to work. After thinking for a while i came up with this system. Take your crankbaits or watever you want to round over and hot glue them to a sheet of 1/4 in plywood or something you can fix them to. You can then use a handheld router and safely route 1 side of a couple baits then flip em over and do the other side. This has worked for me before. There may be a limit with how much you can round over though depending on your bit and thickness of your lure.