There are 3 main schools of thought that I know of.
1. Shackle a fixed-length snubber to the bobstay fitting low down on the hull
. Advantages: increases the effective scope
by lowering the attachment to the boat. Disadvantages: hard to adjust, possible to lose the end when retrieving or adjusting the rode
2. A snatch block at the end of the bowsprit
(I helped a friend set this one up). Advantages: more leverage to straighten out a boat that "tacks" around at anchor
, Can adjust the amount of scope
by either having a long snubber, or letting one run free and running another one (2 snatch blocks make that easier). Disadvantages: the attachment point is usually higher than the deck
, causing a decrease in effective scope.
3. Run a bridle through deck
chocks like on a boat without a bowsprit/bobstay. May need chafin gear
in case it rubs on the bobstay, though.