C30 farm truck, runs but wont re-start

[sr54x4]

first post here, applogize if its in the wrong section.

i have a 1989? gmc c30 dump. I put it here since it is still a square body being a 1 ton. i believe it has the 350 in it. its a farm truck, hauls the you know what from the stables to the far side of the property (1/3 mile or so) to be dumped when ever it gets full of you know what. usually about once per month.

aside from having a dead battery almost every time, it always starts right up. it runs rough and doesnt idle. the problem is, if you let the engine stall out it wont start back up again unless it sits for 24 hours or so.

it does stall often, simply because it is a manual trans, doesnt idle, it has a PTO to dump that needs to be engaged, terrible brakes, no parking brake, dump area is on an incline, etc. and i only have two feet to get all this done! remember its a farm truck, so getting all this stuff fixed is not going to happen.

i would love to figure out why it wont restart after running. i have replaced the cap and rotor as well as ignition coil, no luck. it wont re-start on starting fluid either. usually you can smell gas, so i am thinking it is getting vapor locked or flooded out? are there any simple tests i can do to help narrow it down? driving it out to the dump area and towing it back to the barn with my truck is starting to get old.

thanks in advance!