Yes, forward cleats
We also run our preventer to the bow cleats, but do it a little differently. We use two dock lines with the ends cleated to the bow cleats on each side, and bring the spliced loops aft of the shrouds. Connect a three or four to one vang with cam cleat to the end of the boom and snap shackle the other end to the mooring line on the leward side. Haul the tackle tight and your preventer is in place. To jibe, loosen the tackle, bring the boom centerline, and release the snap shackle. Complete the jibe, shackle the vang to the new leward dock line, and haul the vang tight.By the way. If you have already had a few uncontroled jibes, I would take a look at the bolts that secure the traveler lines at the end of the track. I cracked and bent ours with a few jibes, and one of them let go a few weeks later on a reach in 20 kts of wind. Fortunately the leward bolt held or the boom would have crashed into the shrouds. I replaced those bolts with the next larger size.