I am considering adding a drum furler for the Jib. Is there a down side to this? It appears that all that is needed is a small boat furler from Harken, a 14 " Jib penant, and a furling line. My sail already has the furling jib luff wire. Did I miss any thing? My only concern is how is the jib tensioned other than the luff wire acts as the forstay? Is there a trade off in performance over the non furling jib configuration?