I can't tell you how many times I've won radio contests since I was a pre-teen!
I can tell you that speed dial helps. In fact, I used to win alot back in the early eighties when speed dial wasn't a common feature on telephones! Program the station into a telephone memory slot. If you are ambidextrous, program the number into a cell phone memory slot and speed dial from both phones simultaneously.
If you have to be a certain caller, speed dial the number at that many times before giving up. As far as knowing how many and/or what songs are played in what order, etc, turn off the television and any other distractions in favor of the radio. Always know when the station announces a “money song” or “phrase” (usually during a morning show) and be sure to be tuned in at that time or have someone else listening for it.
By the mid eighties, I had pretty much quite listening to commercial radio though, so no tricks to share after that.
Personally, if I lived where you are, Faithmom, I would set the radio on 88.7 (http://www.krvs.org/
), rip the knob off and dare anyone to even think about changing it!