This is my first post and my first boat, and I could use some of the expertise of those with a little more experience (i.e. you people). Here's the deal:
I have a modified copy of the Edson I. Schock design "Sharon Potts" (http://www.dngoodchild.com/divide_for_sail_boats.htm). The modifications consist of a new compartment of about 1.5 ft length added to the stern, and a short snub-nosed bowsprit projecting maybe 10" past the stem.
I'm working on fixing her up, and I've decided to put together a new rig if it seems feasible. I don't have a particularly good reason for this, except that I'd like to have a somewhat shorter maximum spar length, and that I don't care that much for the existing rig, pictured below.
It has a main of 100sq. ft and a jib of 30 sq. ft.
I'd like to change the rig so something like the one shown below:
In drawing it, I have kept the geometric center of sail area for the two in pretty much the same position fore and aft, although the new one has the center lower. In the second picture, you can see the approximate size of the extension at the stern. I would replace the very short bowsprit with a longer one, possibly reefing.
Any thoughts on this? I'm new at sail design, so maybe I'm being foolhardy, but I like the new plan much more than I like the old. I figured I could do some polytarp sails, and if it doesn't work out I'll have lost little but time.
Second, to make the new bowsprit and boom, I have secured a 25' cedar pole, maybe 5.5" diameter at the foot and tapering to maybe 2" at the tip. This had been dried, peeled, and varnished some time in the past, but the varnish has largely worn off. I actually have two of these - one to make a new mast - but I found a secondhand spruce mast that seems like it will suit admirably. Any advice on making spars from these? I'm not sure what dimensions to aim for - for example, how much longer than the foot of the sail should the boom be? Would 3"maximum diameter be suitable for the bowsprit? Perhaps cedar is a poor choice, although the cost for these poles makes it very attractive. I don't imagine there are definitive answers, so any input would be welcome.