Not forgetting the record gilthead bream!
My first fish was this year withing 20mins of entering and was a 4lb mullet, mind you missed 3 shots before that, then i realised let em come close, real close. Went on to spear 4 on the trot then. As lee says no need for diving or breath holding to shoot some mullet, just find some of that bright green cabbage weed in the shallows, 1-3m, ideally with lots of boulders and string weed to hide you a bit, i have fiund that they dont really like dense kelp, and be really, really stealthy ( like you're sneaking out of a rough girls bedroom the morning after and definitely don't want to stir the beast!), and be prepared to hang around motionless for 5-10 mins on or behind a rock if a place looks likely and they are quite active and move round a fair bit. Keep your gun pointed midwater and away towards deeper water as they will see you and skirt around and drift off towards the open sea, that way your gun is already pointing where they are going. You can be lucky and see the occasional bass in or around the mullet. I'm certainly no expert but have had a bit of success straight away( better to be lucky than handsome my mrs says!), most mullet I see are within 50ft of the shore and normally in waist deep water, just before high water is normally the best time for me, I normally go on a neap as I find the viz is a lot better, but my mate reckons a big tide sees more mullet coming in close to shore, if you can see them that is. With Dancing ledge you should be on the right tracks for bass, mullet and some pollack( although the pollock are always smaller than you'd think in the purbecks), not telling you how to suck eggs but watch the ebb tide flowing E to W there as it can be vicious and you will not swim against it, the flood seems to only run at half the pace. Last trip in that area I had was 2 hrs before low then 1 hr up on a neap and I drifted a mile in an hour easy and that's close to the cliffs.