What is the best way to prepare and cook lamb spare ribs? I have been unsuccessful 3 times. Is there a lot of trimming that needs to be done?

There are 2 ways. You can either braise them (cover with stock, peeled tomatoes, a little wine, and aromatics, and simmer until the meat falls off the bone) and make a ragu, like you would with pork spareribs. Or grill them with thyme and garlic. Serve with lemon wedges.