I currently have a 77 C20 Crewcab that I am trying to build into a daily driver and vacation/towing rig. I allready plan to convert to dual rear wheels and am considering 4x4 as well. I don't do any real offroading. The occaisional drive through a pasture to check on cows or to drive to the stock tank on my family farm is about it. Sometimes a muddy country road. Most of the time a rear locker would get me unstuck pretty well in the light mud situations. If not, on th farm at least there is always the tractor or the CAT bulldozer. My concern is on boat ramps. A few of the areas I have gone to in the past I have watched trucks not able to pull the boat out because the ramp is so steep and wet under the rear wheels. I have only used my dad's truck in the past(99F150 4x2 no locker) for a 14ft john boat and trailer in these areas with no problems. But we always watch as other guys have trouble getting the boats out. No we are looking at a bigger boat in the next year or two (20ft runabout probably) and I don't want to get stuck. Now I do have the advantage of a long wheelbase and the front tires would never get wet but having 4x4 would probably help. So I ask ya'll do you think it would be worth it to convert or just go with a rear locker alone?