John Toal talks to the Sweetloves, a Belfast family who swapped their lives here in Northern Ireland with a family from Belfast, South Africa. John tries to master the art of fishing, on a cold, blustery, Northern Irish Bank Holiday Monday. Paula McIntyre cooks up a healthy vegetable pasta, an antidote to the indulgences of Easter. Anne-Marie Wallace invites the Saturday Magazine to her quilting group and looks at the resurgence of patchwork. And because it's Grand National weekend, John looks at the way people choose which horse to back, with methods ranging from the scientific to the utterly random…