Time is a luxury that few salespeople will experience at trade shows.
Presentations can consume a lot of time.
A way to be more effective in the booth is to utilize smart questions during the presentation to assess if you're on the right track. Don't be fooled into thinking that just because visitors ask questions that they want a full presentation. An effective presentation should be 5-7 minutes. After that, you should consider setting up a meeting later in the day. Most trade show visitors perceive exhibitions as a group-selling environment.