None of our loadouts turn so I can't comment on that but concrete is absolutely worth the money in a hog loadout.

We have a building that we used to use a portable chute and then added a permanent, enclosed, split level concrete load out to the front of the building.    That building went from being a nightmare to load out of to be very easy to load hogs.

Yes it cost way too much to add the loadout but it is nice.  Its easier on the hogs and easier on the guys loading them.   If you look at the cost of it over the life of the building and number of hogs that use it then its a little easier to swallow the cost.