Depending on the age of your Bayliner, mounting options can be scarce. Mine is an 89, which luckily has a nice flat top on the stern. It had a Penn mount, which I took off and replaced with a Cannon, and another on the other side. When they changed to the Euro tail, or molded in swim platform, this option was lost as there really isn't a flat top on the stern anywhere. I would go the plank route as described above, if I were you. Not only would the swim step be too low, but too far back to use comfortably. You don't want to have to lean out over the back of the boat when all hell breaks loose, especially to wind up 280' of cable manually! The nice part on mine is when we go tubing all you see back there is the plastic mounting blocks.

Electrics.......only way to go. Pics would be nice to give better advice.
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Organized people are just too lazy to look for things.