I've spent alot of time sailing the Bahamas
and this style of anchoring
is utilized when there is a tidal flow strong enough to defeat the wind's effect. If you anchor
and the tide is ebbing sometime that evening the flood will begin and your boat will swing 180 degrees possibly tripping a single
anchor. So....you put an anchor 180 degrees opposite of the first. (The 60 degree angle is better if you want two anchors to prevent dragging but not really a Bahamian moor) I have never (and never heard of) tying the rodes together.
The anchor rodes will usually twist with each tide change. Some people will use their dinghy
to run their stern around to take the twists out. I usually just deal with it when weighing anchor (but I don't stay anywhere long)!
In a tight anchorage (Allens Cay at the north end of the Exumas
is a good example) if everyone else is Bahamian moored you need to follow suit. Because the two anchors prevent the boat from swinging (it just pivots basically) if you are the only one on a single
hook, your 360 degree swinging radius will probably put you into one of the "stationary" boats on the tide change.