I don't know exactly, but I think my skeleton gig weighs a couple hundred pounds? It is wooden like the cart in the picture. It has a little step to use to get into it. I can roll it around by my self just fine, but it is heavy. I can pull it up into my 4 horse stock trailer too.
My trailer has a solid divider to make a front portion and rear portion of the trailer. I was thinking I could put my mare in one of the stalls up front and push the cart in facing the rear of the trailer and have the shafts poke out the back and put a red cloth on the tips. But I would have to do a test fit to see if the shafts will be able to poke out with out being jambed. Or we now have ramps for our 4 wheelers and I could try getting into the bed of the truck. I'd have to make sure I could do it by myself though.