Do you have a 2nd account with at least 600 in it?
I've seen the parlay split strategy utilizing maximum combinations, but I prefer the "two book" method myself.
If you have another book with at least 600 in it, you can bet it both ways at opposite books. And if the juice is favorable you might only get clipped for $30 or less .... or potentially grab a middle if there is a line difference.
There is a teaser strategy as well that splits you between +240 odds and -130 at opposite books. You space the games apart and the 2nd leg is taking the dog SU. If dog wins, you cash at 2.4 - 1; if not, you get your -130.