I have had to do the switcheroo on stubborn BP's but I do it differently. I put in the live prey item and use a FT prey item in the tongs to keep the live prey item away from the BP...as if I'm a goaly separating the BP from the live item with the FT item as my hocky stick. I also make sure the FT is warmer than the prey item. The BP sees the live prey but then hits the FT prey out of confusion. After two times like this they will hit the FT without seeing the live prey at all.

JonV