how is it that pinnacle has limits of $500 for NCAAF 1st q totals but limit of $5,000 for 2nd half totals? 2nd half totals are harder to model and if pinnacle doesnt allow for big 1st q bets why do they allow big 2nd half bets?

how do you model 2nd half totals and spreads?

edit: can a mod change the title of this thread to "Football 2nd Half, BIG $$" for me please