Here is a way that increase stability when the front wheel is in the air. Place a rock or a friends boot next to the rear wheel, I used a small sandbag I had in the garage for illustration. It wasn't unstable to begin with but this helps keep the rear wheel from wanting to rotate around the kickstand if you push too hard on the front. Remember the Trail Stand has 1/2" adjustability so that you can lift the wheel just high enough off the ground to do the necessary repairs and keep it as stable as possible.
(Here's the disclaimer) As with any lifting device the user needs to use caution to not place themselve's in a situation that could lead to injury while lifting a motorcycle.