I recently took Trackmaster ice racing and it worked well but I had a bit of a problem setting up the course. The lakes I race generally have no signal, and the courses change every week, so I need to define the track when I get there. Additionally, we're generally not allowed to walk onto the course, so I found defining split markers very difficult. I effectively had to start a new set of markers, before going into practice, find myself an open bit of track without too much traffic, and then look down and hit the "locate" button and quickly add a sector. Trying to do that while on track wasn't exactly ideal...
What I'd love to see would be a simple mode where instead of picking a set of split markers before starting a new session you could start a session without split markers then, when you hit the start button (or some other button) it would define a split marker at your current location and start recording immediately. That way you could hit it at the start/finish line and let the app do its thing.
Maybe before you start the session you can name the split marker so that it's saved along with the session data, or maybe the app prompts for a name when you tell it to stop recording?
Anyhow, that's my wish