I hate doing body sparring i would rather do head sparring and take a bit of a beating than doing it. I was body sparring with this 1 lad when i forgot my mouth guard and literrally had his arms across his body so there was nowhere to land it was very annoying so i smashed his shoulders.
feint to his head- with a fist coming towards your face your gonna open up your guard on instinct. Keep hitting high and then sit down on a big shot to that soft belly, should take the air out of him. I quite like a right to the shoulder then a lead uppercut to the belly in body sparring.