Arrange onion slices evenly over the bottom of the slow cooker, and then place the roast on top of the onion. In a bowl, mix together water, sugar, vinegar, soy sauce, ketchup, black pepper, salt, garlic powder, and hot sauce; pour over roast.
Cover, and cook on Low for 6 to 8 hours, or on High for 3 to 4 hours.
Salt & pepper meat.
Paprika rub.
Marinated pork in wet mixture in refrigator for approx. 30 minutes prior to cooking.
Included onion tops for flavor. (And they were yummy eating, too.)