If you could launch at rennell sound and head out to hippa that would be ideal. There are a number of spots you could anchor inside the pass with short runs to the fishing grounds. As others have said June is one of the best times to catch a HOG, either off the hippa light or at a number of locations inside the Pass itself. As for boat traffic it is pretty minimal with 22 or so boats from WCR, 6-8 from the tugboat and 6 from the outpost. As much of the fishery is on offshore structure there is plenty of room to get on the fish without traffic. If you are looking for a big fish inside the pass bait is hard to beat but offshore big plugs are my go to. There can be an endless supply of 18 pounders in june up there and the big lures help cut back on these also switch the standard tomic hook out for one a couple sizes smaller as you will be releasing a lot of fish.