Outboard Advice Wanted

New member with a CB Stuart – looking for advice on adding an outboard.  Type: Gas, propane, or electric?  Power and size needed? Which brands are most reliable?  Bracket types that would be most suitable, and not an eyesore?  Are there removable brackets?  Suggested locations for mounting bracket?  Any and all outboard advice is appreciated.  Mark Rager ragermark@yahoo.com