Honestly I'd make yourself a small eggcrate basket that hangs over the side of the tank. You can put frags in it as needed then remove the basket when it's no longer needed. Most people say to leave the frags with no attachment for a week, but I feel that might be a little unnecessary personally. I'd let them sit in the basket for 3 to 4 days then go from there. Also, the minute you touch the sps the polyps will retract so there is no need to touch them prior to the fragging. Oh and super glue gel will quickly become your best friend.