I use a hop spider to reduce the amount of debris in my chilled wort prior to transferring it into my carboy for fermentation. The hop spider is a 5-gallon (19-L) paint netting attached to a 3-inch (7.6-cm) PVC pipe and suspended into the kettle by legs. The hop pellets mostly stay in the bag rather than roll in the boil. Is there less hop utilization for the pellets in the hop spider? What about the hops at hot break? Do they impart less aroma/bitterness than hops free floating in the final whirlpool?
The Wiz answers questions about the impact a hop spider has on hop utilization, prepping a barrel, acid yeast washing.