mbalhuizen,
We definitly have some confusion.

The yellow lines in your picture are mast rotators/overrotators/inducers, not limiters.
The striped line attached between the boom and the mast rotator wishbone is the rotation limiter.


General comments as to use.

Most boats have a rotation limiter of some type.
They usually have settings for upwind and downwind.

Mast Rotators are used downwind and/or in very light wind.
In light wind, there isn't enough pressure from the boom to keep the mast fully rotated,
so the inducer prevents the mast from "banging".
Most sloops don't produce enough boom pressure when running downwind to overrotate the mast to 110 degrees.
A mast rotator is usually needed.

A boat running a spinnaker needs to rotate the mast past 90 degrees to prevent mast breakage downwind.
Since they usually keep a tight mainsheet and don't travel the mainsheet very far down,
there is usually enough boom pressure to overrotate the mast properly.

There are two types of positive rotators/overrotators/inducers, manual and "automatic".
Manual rotators include the type on the boom, shown in the picture,
and the type which use an additional wishbone mounted on the front of the mast (see Murrays catalog, page 27).
This type must be manually released and then reset on each jib or the battens can get broken.
Many boats use an "automatic" rotator built from bungee cords.