Triple Crown uses
US Club Rankings to determine which teams get automatic berths to their TC/USA Nats and probably looks at them when determining where to slot teams in CO (i.e. Super 64/32, Fireworks, Sparkler). It has 3 components - finishes in major tournaments (NPS), coaches' polls and college placement (CPI).
The tournaments are in 3 categories (i.e. 4th of July CO, Championships and Regional). They are weighted by the level of competition at them, which varies by age level. For 16U in 2013, winning ASA/USA 16A Nats and PGF were weighted the same at 100 points, TC/USA Nats was 80 and ASA Eastern Nats was 20. For 18U in 2013, PGF Premier was 120, TC/USA was 90, ASA Gold 60, PGF Platinum 20 and ASA 18A was 10. For 16U in 2013, Boulder and TCS Super 32 were 60 points, Fireworks 15 and Sparkler 12. You can see the points for the rankings by clicking on the Events Considered tab and then on an event.
Stingrays could help their attendees if they got themself included as a regional event.
I believe the teams are responsible for entering their college commitments. The commitments are given points based on the college division.