Hilton Garden Inn, Chicago. Most are in Wisconsin and Minnesota.
technologicalangler.com has more listing.
Our itinerary for the day was:
Saturday, Core and HELIX training:
9:00-10:15 Session 1: Installation and troubleshooting
10:15-10:30 Morning break
10:45-12:00 Session 2: Fundamentals of sonar and GPS operation: making sense of the numbers. Cartography choices including AutoChart Live.
12:00-1:00 Lunch on your own
1:00-2:15 Session 3: Side Imaging: interpret, optimize, customize
2:15-2:30 Afternoon break
2:45-4:00 Session 4: Down Imaging and 2D sonar: interpret, optimize, customize
Q&A with Technological Angler Staff follows Session 4