That is why I keep going back to a fisherman as the perp.
He could have gotten to know them over a few days. They may have been riding their bikes over there for a few days and seen him in that time.
Whenever we hiked, and my kids saw someone fishing, they always wanted to stop and look. They wanted to see in the bucket and see what was caught.
If a pedophile wanted a good way to meet kids he could hang out at the lake and talk to any kids that stopped by.
We have the girls scent going to the edge of the lake. Maybe they stood there and talked to the perp for awhile.
Then it went into the woods a little bit. Maybe he lured them into there to see some fish or to have a picnic?
They may have been riding their bikes and saw him and he motioned for them to drop their bikes and come through the fence. They already 'knew' him so they felt comfortable doing so.
They talked at the waters edge and he said " do you want some fishing poles to use, or do you want to go on the paddle boat?"
Let's go over to my car/yard/ and get your poles or get the boat.
I think this too , but I feel it was someone who felt comfortable at the. Lake area. What's do most people do there, fish or bike, walk around? The person had to spend a lot of time looking for the perfect place at the lake to plan this IMO .so probably not employed and can blend into the area without standing out or looking suspicious,, probably hung around posing as a fisherman and bike around to learn the ins and outs of the area? It would be a clever way to wait for opportunitys without looking like a stalker IMO .