deerslyr1, there are some things you can do depending on the type of alarm you have. I don't have anything fancy just a $16 driveway alarm. I took it apart and made an external antenna out of #12guage solid copper wire (household electrical wire) on the sending unit and receiver. That gave me range out to 150 yds with no problem.
I also rigged one for 6mm06, but he needed to be able to control the volume like you do, so I disconnected his speaker and replaced it with a jack to fit headphones. Then he found an inline volume control for it. He can now change the volume in the earphones as loud or quiet as he wants and doesn't have to worry about the coyotes hearing it.
Without a light or night vision, I don't think moving your baitpile further is going to work well.
