I use wood as a last resort, cutting a notch is OK, but if the wood decides to split at the load point you can end up with a couple spears shooting down under the truck at two different places, not my favorite visual,...
What I'm fabricating for my truck is a couple struts. Some stout tubing with C-stock welded at each end to firmly prop the bed over the frame. Just a matter of finding a solid cross member on the bed & the frame, cut the tube to fit, set the C-stock in place in the most stable position, & weld it.
I'm thinkin about making a couple hard mounted props that fold down inside the lift rails so I dont have to tote them anywhere.
1956 GMC 370 dump " 'Tater "1970 VW Volksrod "the Black Bomber"
2007 Chevy Avalanche
2020 Jeep Cherokee Trailhawk,
2005 Harley Davidson FLHTCUI
I dig all cars, old and new, whether they were hammered out of American iron, German steel, or Japanese tin cans. Being unable to appreciate them all is missing out on a world of great things.
But thats just MY opinion! :P