custom earplugs for ruptured eardrum

So I popped my eardrum the otherday in Tugun while diving into a wave when trying to exit. Its all healed up now, but I don't want it to happen again. I currently wear the surfears, and I think it offers some protection. I recently got some impressions at the audiologist, but they have no idea what kind of earplug would be best for preventing ruptured eardrums again. They offered swimming plugs without vents, but from what I heard non-vented could increase the chance of rupture. Anyone here know a good manufacturer I can get custom earplugs that would be best for preventing another rupture?

Thanks heaps in advance.