Scott,
I've seen various rigs and strategies...
Some poles have bridles for both the toppinglift and foreguy. A bridle on the foreguy is a forgiving strategy for the prevention and recovery of the pole 'skying' and a bridle on both transfers the loads to the ends of the pole and puts the pole into compression. A central attachment point for either is simpler but increases the bending moment through load transfer at the center of the pole, which is not necessarily ideal in all wind conditions (especially heavy air). Compression and bending moments need to be considered when engineering a pole.
Some boats are rigged with the foreguy block directly in front of the mast while others are rigged at the foredeck cleat. Think about how you want it rigged when the pole is farthest aft because current racing courses rarely have the pole near the forestay.
Aboard Lorelei, we only deploy a foreguy in bumpy conditions when a need to stabilize the pole becomes obvious. The rest of the time, the twings provide enough downward force to control the height of the pole.
Hope this helps.
Best regards,
Bud Brown
#1085
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