Hey Rob,
Deca (held at Deca Shepparton) is a event SAU do 4 times a year.
Its a whole day event, 50 entrants max
Field is split into 2 groups of 25
Morning consists of Skidpan and Sprints
Skidpan...
2 cone layouts on the skidpan, you have 2 attempts at going the fastest around each layout
Sprints...
2 sprint sections, basic point A to point B, you get 1x 80%/sighting run and 2x timed runs at each sprint
Break for lunch
Afternoon is all on the skidpan
The skidpan is is split in 2 and we have tandem battles, 2 cone layouts
Theres a identical cone layout per side, race a mate to see whos quicker haha
If theres time at the end of the day then we do same battle theme but if you loose then your knockout
hopes this helps out