Hardcorehunter - thanks for the feedback. Do you have any experience hunting in relatively thick cover, and what set-up might work?

At our club - we've got another small rectangular field (about 1/4 acre) surrounded bypine trees and thick brush on three sides and some hard woods and tall grass on the fourth side. The hardwoods (forth side) is on an incline with a deer trail coming from that direction. Within a mile, there is a pig farm and coyotes are very common in the area. We have a 15'ladder stand over looking the field (35 yards from the field) and it is enclosed from the chest down to conceal any movement. I would like to set-up in the ladder stand and use the same CD player method I decribed in my original post - but I'm concerned I won't see the coyote approaching in time due to the thick cover and the volume may spook them? Any recommendations for this scenario?