of course the wood "fluffs up" when u split a round up, you can never put the pieces of the puzzle back together as tight as nature did before it was split, BUT considering the bed of trucks and trailers are not oval or cylindrical , how do you fill all the wasted space?the best way to fill a square space is not with circles. if the wood is split, looking at the bottom or top profile it can be triangular, square, rectangular, etc, many different multi sided all that can be used to stack every bit of space which would otherwise be wasted. although obviously, technically. the best way to use the space the most efficiently would be to use a combo of rounds and split pieces to fill every last bit you can, even using small rounds to fill the voids, you still arnt taking advantage of the multi-shaped split pieces ability to fill the voids like puzzle pieces, but then again i never fill a trailer with split and unsplit wood togeher, its one or the other.. so...
imgona go eat some ice cream and watch axemen, hope jimmy pulls some logs! lol