I am going to suggest another forum for suggestions. It has more traffic and they may be able to give you some suggestions. hondaatvforums.net
The easiest way to get more ground clearance would probly be tire height.
A forum community dedicated to Honda TRX ATV owners and enthusiasts. Come join the discussion about reviews, modifications, classifieds, troubleshooting, maintenance, and more! Open to all models across the 500, 400, 300, and 200 series.