Yeah but which side Like putting "open other end" on both ends of the milk carton.
Like how many sides are there on a round pile How about square "beacons" then you could have 4 sides, pick any 2
Side on there would be all the little "boats", and all the "beacons" twinkling red & green.
Nah just make one way channels and throw in some "round-a-boats"
Cheers, Kerry.