Do you mean mooring a BRe to a single swinging buoy, in the middle of a harbour?
Mine is moored like that, in a very tidal river, drying over low water springs. Exposed to N. winds SW Ok.
Two seasons now and no issues using an equal leg bridle over both the original bow fairleads P and S, then led back to the original cleats, near the shrouds.
I too struggled to find much info on this problem, so here we go!
I enquired with the yard about a centre fore deck cleat, but was advised that reinforcement of the deck area would be required to fit a cleat. Did not fit. Didn't want the work/weight/cost.
I've had to tinker a bit, and my current set up now does not tangle or twist up. Works well.
Chafe was the main issue, and my nylon rope bridle is double sheathed with woven polyester sleeving over its full length. Anti-chafe Hose will not fit thru the slightly undersize, imo, bow fairleads. Not, without requiring the mooring bridle ropes to become undersized.
I added another S/steel chafe bar on the port side deck wood strip, as my boat had only one fitted stbd.
In way of the wire Bob stay, the rope bridle is fully oversheathed with heavy, soft wall, fire hose.
Now no chafe issues at all.
What with today's forecast, I now need to go out and do a pre-storm check!
Will try to get photos for you.
It is possible to reach the cleats from the open companionway, but to get the bridles into the fairleads, you need to go onto the fore deck (fair weather only for me!) or do from dinghy.
I motor up, get the rope eyes on the cleats (fish with a boat hook), then mess about with fairleads etc, once the boat has settled.
Can do all this alone, easily enough.
And finally... I have an 8mm stainless storm chain from the mooring swivel, clipped to the trailer eye/bob stay eye. Will be going on today! This is set as a last resort, and will not come under weight while the ropes are effective. Consequently the chain is rather long, and so has the double benefit as a surge damper.