The airlines "forbid it" I guess, but some people do the following:
Buy a round-trip ticket for say $200, leaving Syracuse for Orlando on 4/27 and returning 5/4. Then buy another round-trip ticket for $200 leaving Orlando for Syracuse on 4/28 and "returning" to Orlando on 5/5. Use only the 4/27 (Syr.-Orl) and 4/28 (Orl.-Syr.) tickets. Total cost of $400. But...as I said, I guess its frowned upon and if they figure out you're doing it they can cancel your reservation. Not sure how they would know if you did two airlines (assuming you could get those low rates on two). A lot of work (and $)...wouldn't be worth it for me unless I was buying 200+ points and I knew for sure even $75/point wasn't going to be available to me.