We did sign ups for our whole church and had about 70 sign up to participate. We scheduled people on hour blocks. We had a handout in our prayer room that people went through as they prayed. So from 12:30 pm on Saturday to 12:30 pm on Sunday people were praying. In the night many would walk through the skating rink (place where we have worship services) and pray or would stay in our prayer room and pray through the agenda. We had live worship at two of those hours.
On Easter week and the following week we had well over 500 first time commitments to Christ. I think 24 hours of prayer will become an important part of our prepartion for key weekends where we target the lost.