A bowsprit will significantly enhance the performance characteristics of an asymmetrical spinnaker. It allows the sail to get further away from the blanketing effect of the mainsail. It also allows the sail designer to dramatically increase the girth of the sail. Finally, a bowsprit makes handling, particularly gybing, easier. During a jibe, the sail is less likely to run afoul of the headstay. If the bowsprit is long enough, the sail can be jibed inside the tack downhaul, between the downhaul and the headstay. Before investing in a bowsprit, ask a Quantum sails consultant about estimating the correct length for your boat. More about Quantum spinnakers here.