Though my hair doesn't naturally part, once I do it it's hard to get rid of, and as I'm an infrequent washer that can be a pain too. The best way I've found to eliminate a part is to use a pick to comb the hair back and clip it that way with little claw clips and some spray gel (works like hair spray but not as crunchy) for an hour or tow, then pick out again. Or just tie it back for a while and then loosen.
Get used to me. Black, confident, cocky; my name, not yours; my religion, not yours; my goals, my own; get used to me. -Muhammad Ali