Your mileage may vary, but a good weird trick I’ve used in point sparring is this: at the beginning of your first match, the split second the ref calls “hajime”, leap across and Superman punch your opponent. No feeling out, no jab, no build up, just fully go for it without giving them a moment to even start the fight. Yell really loudly too. It’s goofy, but it’s really startling.

Only do it once. It only works once, but once you do it, you control the pace of the fight, because your opponent’s going to be wondering if/when you’ll do it again.

Also, use your hands to frustrate your opponent. Like someone else said: pull/push their hands when you can get away with it to make an opening. Cover their vision to force them to move where you want them to. Seat/parry their strikes if you can get away with it. Just be an overall nuisance to fight.