This from the Alltrax web site under the Electrac controller questions and answers.
http://www.alltraxinc.com/old/AXEDOCs/FAQ.pdf
I use the controller this way mowing on a hill under a pine tree by sticking the mower deck under the branches. Just use the reverse switch and apply power. I keep my speed low as to not stress the belts and transmission during this kind of trimming.
Your mileage may vary!
Dwight
Dwight L. Hazen
Indiana University, UITS
Bloomington, In. 47408-7378
812-855-5367
Ham Radio wb9tlh arrl net http://wb9tlh.ampr.us