You could mount either a Davis Spar-Fly
http://www.davisnet.com/marine/products/marine_product.asp?pnum=01310 or a Davis Windex 10 Sport
http://www.davisnet.com/marine/products/marine_product.asp?pnum=03120 on the masthead. On my Harpoon, I have the bracket for a Spar-Fly screwed into the side of the top of the mast, and also a socket for the Windex 10 Sport on top of the masthead fitting. Currently, both devices are broken and not installed. Guess I need to get one, though I just got 2nd in a distance race without!
You can put telltales on your shrouds. Generally, wool yarn works far better than acrylic. All I could find in a pinch was acrylic, but I want wool. Also, you could use cassette tape. I have heard that 8 track tape works best - it still flies nicely, but has better longevity than cassette tape. I taped cassette tape to the shroud with a bit of electrical tape, and accidentally caught it on my hand the other day, and stretched it. Need to go by the local "farmer's" market some Friday night, and see if the junk seller has any 8 track tapes
Some folks get very fiddly with it, basically re-creating shroud telltale grommets out of plastic milk jug material, so that the telltale is free to spin on the shroud. Me, I would probably just try some Shroud Tales from Sailcare:
http://www.sailcare.com/reeftiesandtelltales.shtml
Also, keep in mind that you should have, at a minimum, luff telltales about 6" back from the luff of your jib, and leech telltales streaming from the back of your top 3 batten pockets on the main. I rely on these telltales so much, when I see people sailing without any telltales, I can't imagine how they trim the sails. It would be like sailing blind...