One reason I have had an interest in that empty house, next door to the house that I assume had the "borrowed" paddle boat, is that there might be access to that paddle boat through that yard that is secluded enough to get away with that "borrowing." However, as I'm also sure LE has thoroughly gone over that boat, and possibly even with dogs, I tend to think it a no-brainer it was not used in the abduction. As to a lure, I'm really not all that convinced such would entice those girls to ride all that way for a 'boat ride.'
Another thought here... as it didn't take people long to look that 'for sale' house up and learn who its owner is, and this perp even casually knows members of these families, it might even be one reason the bikes were staged where they were.
I don't think it was family, not convinced at all JW had a part in it, but maybe it was all made to implicate such?
Just my thoughts here, but I tend to think Lyric may have been the primary target, not so much Elizabeth. I do believe it was planned. And I do think those bikes were staged. I also believe the perp had a bit more thorough knowledge of the area around that lake to pull it off, too.