It's a motor guide. No adjustment that I've found. My next one will be a Minn Kota, variable speed.
If you plan on rigging, a 24 volt would be beneficial. Longer run time. Assuming you have the room for the extra battery.
Foot controlled will free up your hands. A recessed tray helps also.
Yes, a variable speed motor would be great. Look on the classified section, or Craigslist. Usually some decent ones on their.

