I'd put a tracker on that. It's the kind of vehicle that may just get stolen to order. The normal drill is that it is stolen, then parked up for a few days. If no-one finds it,. it's shipped off to its destination. The few days park-up is precisely because the vehicle may have a tracker and may therefore be recovered.
Wouldn't have thought a 3 point speeding offence would affect the premium much; I'd still shop around a bit. Personally, I use Quoteline Direct - a bit like the online comparison sites, except you get to speak to a human being.