If the bed is metal and I was not going to keep it, I would totally unbolt, disconnect it from the frame and then secure it on the frame with straps. Then just drive it down to the local scrap yard and have them take it off with their equipment.
Steel scrap is bringing about $200 a ton right now.

2-Ton

1967 GMC 9500 Fire Ladder Truck
"The Flag Pole"
In the Stovebolt Gallery
1946 2-Ton grain truck
1946 3/4-ton pickup,
1953 1-ton pickup
1957 1-ton flatbed dually,
1954 Pontiac Straight Eight
Of all the things I've lost in my life, I miss my mind the most!