Candace Kahn at Action Rider Tack www.ActionRiderTack.com has a V-Max heart monitor for $120 . If you buy one, get the heart monitor gel, too. She's a cool lady - into barefoot and treeless.
Another favorite gadget for trail riding is the Garmin Forerunner that reads out your mileage, average rate of speed, where you've been. I think mine was about $100 on eBay. Nancy
