For the Capri 22, I used to use a bungee, cleated around the traveler, then around the tiller twice, then back to the traveler... I'd slide the hooks one way or the other to lock in "straight." I used to say it gave me about 15-30 seconds (depending on conditions) to do whatever I had to do... Usually JUST enough to get started raising the genoa, or drop the main... Never enough to finish! So Divide how many minutes somethign takes you, and interrupt that every 30 seconds to come back and adjust course.
It's why I purchased the ST1000+, and my whole sailing experience got WAY better. I'd say, that it's the best $400 you can spend if you sail solo, pretty much ever!
it's good enough now, that I'll fire up the motor, bring it to gear, just above an idle... giving me 2 knots... lock the course (longest course home)... and drop sails, button up boot, roll/pack sails, tidy up, and by the time I am nearing the dock I am nearly done!
Same goes for leaving the dock... I lock the boat into the wind, just above idle after I am out of the dock, go raise main... get everything set... trim the main fall off, set new course with TP, then shut off the motor, pull it, then raise the genoa (I've corrected course 1 time during this)...
The Tiller Pilots aren't flawless, but boy do they make single handed sailing MUCH MUCH easier. If you can stretch to get one, you'll NEVER regret it.
I should note that the Capri 25 is more balanced and bottom mounted rudder, so it's "stiffer" and I can lock the tiller without the pilot for 20-30 seconds reprieve (sometimes more as the balance on this boat is better - I probably rigged it better)... but I really use the TP for most things. You'll love this though.... sometimes I'll throw the tiller pilot on the pin of the tiller... but not hit auto (essentially locking the tiller)...
That leads me to a question for all of you... have you ever gotten good enough rig balance on your Capri 22 so that locking the tiller at X, will sail it given a fairly consistent set of winds etc... I never could seem to hit that sweet spot with mine.