I've cooked about 50 hogs over the past 20 years.... all on a spit. I started with rental spits, and then just went ahead and made one with a friend of mine. Making a cooker might actually be a good scout project if you can find an old 500 -550 gallon oil drum somewhere. You can cut the drum with a sawzall to form the lid and base. Unless you know how to weld you can then buy the spit (actually I use a stainless steel cage to hold the hog securely so it doesn't spin as it cooks down), and motor on-line. Its a fun time and the pigs turn out great. Someone does have to keep an eye on the cooker, but it is not a lot of work. Just adding some coals every 45-60 minutes to keep the temp steady.
Congrats to both you and the new Eagle Scout, Dad.
KCBS Judge - BWS ExParty - Weber 22.5 --- Smokey, my friend, you are entering a world of pain