When you start shopping for a TM check out Minn Kota hand control models with 3X steering. They have a built in tilt and extension for the handle and the head turns three times as far as the handle so you don't have to swing the handle so far. In fact turning the handle just 60-degrees from straight forward puts the motor in straight reverse by turning the head 180-degrees.
I'm not sure where you would find the extension handle that goes on a foot controlled TM. You may be able to "Google it up" using "Trolling Motor Extension Handle" or similar key words.