First make sure you buy pig roaster made out of top-quality material. Also the length of the spit is very important and everything less than 50 inch isn’t good because that is short Ø for the whole lamb / pig and in the case of shorter spit, the motor is positioned close to the heat source and that is not good.   We recommend and use only high quality food-grade stainless steel. Girders or carriers of rotisserie or spit rod holders should be made of solid and stable material and once assembled they have to stand still without any support. Special attention is to be paid on thickness of welded joints and quality of welding because you don’t want your rotisserie to fall down halfway through your cooking.