Re: Loose shrouds
You will also find that the rig will loosen or stretch after some use. SO you may have the end result of this too. You can get a cheap "Loos" guage from Fisheries or WM. You will probably need the smallest of the three. I will swag $20-40. Then next better one is just over $100, but more accurate.
The folks at Ballard sails may have a general how to tune you rig. As many sail makers do. I have one from Ullman. There is a sticky on here with a general how to tune a rig too. Helpfull to have a rig centered and the rig tensioned correctly. If it is not, you may not point as high, nor get the max speed out of the boat too!
She drives me boat,
I drives me dinghy!