One block position is only good for one wind
angle and one wind
speed. You need adjustment just like the headsail for correct sail shape. With two staysail sheets
you can put two fore/aft rigged tracks. With a single sheet, a boom with a side to side mounted traveler will get you the adjustment. I like the boom, self tacking for single handing. I use a preventer/vang when I get past the traveler range. Down side is I can't run Genoa
staysails. One of the many trade
offs in dealing with rigs and boat in general. Your boat your setup. Try to get out on both layouts see which you like.