We cruised alot on a RL24. Our gulf much smaller though but known for steep 4 foot chop as windward is a 100m depth channel that concentrates energy to unleash on the shallower bulk.
That was a great size for 2-3 people and used with upto 5 weeks of supplies. Only 155kg keel though, I think it'd be more work with a heavier unstayed mast. Although underway, I'm assuming the junk rig is a much better lifting sail, anchored vessel might rotate a bit more. We used lightweight Bermuda rig and placed heavy stow ballast at leading edge of keel to improve rough ride but counter of such was crew always in cockpit to get waterline and tacking drag on keelson was from a very shallow model.
All up with months of provisions, tow weight of 2 km tow around 1500kg.and launched retrieved by 1800cc Subaru.
Nice boat though, easy to learn on, I'm thinking America imported or built some too. I think they're Australians most bought trailer sailer. We just stayed in our gulf though, probably fit in a 150x50 km box and plenty to explore and learn.
We preferred buckets to through holes, we often beached on ebb tide in knee deep if you go walking soft mud. Didn't worry about pipe work and such. On harder beaches, plane flat enough to lay about 15 degrees. Is slow work when beating into rough stuff but upright when beached. Always beached on tides to avoid scratching gel coat and having moisture penetrate protection barrier.
I'd be to scared to cross a gulf as large as yours though. Simply bumping post with an idea. I'm not a big fan of through holes.
Fast enough boat in conditions though. Best average was about 8 knots over 3.5 hours. Mostly around 2-3 knots is my guess.