Peel the king prawns and cut the cleaned squid into 3cm pieces, then thread onto three skewers. Light the barbecue. Brush the skewers with your chosen glaze, then, when the flames have died down, cook for 2 mins on each side (or, cook in a griddle pan set over a high heat). Brush with the rest of the glaze and cook for another 1 min on each side until charred and sticky.