I agree with Ag Man, demonstration is key.
I competed in Ag Sales all four years of high school; my senior year our team won state and compete very strongly at the national level. I've sold everything from Powell Scales to SureLatch Gate Latches. The latches were fun because the company gave me a small gate display with an actual working latch system. The hands on demo was great, I could show the "buyers" the product and used the display to answer any questions or refute any concerns they had. Speak with a local Ag store and see if they have any extra floor models or demo products that they would be willing to allow you to use.