Like many others here, have been single-handing my C&C 29 for ten years. Even when others onboard, I find it easier to do it myself. The exception being another skilled sailor.
I have Hank on headsail, no lazy jacks, wheel steering, and lines lead aft.
Point up in gear, idling. Main first always. Sheet in. Jib up. Bear off, enjoy sailing.
Down a little more fun. Sails rarely drop fully over 8 knots, so I'm heading forward. Jib sheet taught, main loose. Point up back winding jib slightly. Blow both halyards. Go foredeck, get jib to the deck. Then the main down.
Back to cockpit/bridge deck lash main. If winds up, don't worry about flaking, just lash to boom. Up to foredeck and lash down jib as with much wind she will try to raise on her own.
Would a roller furled be easier, of course. Lazy jacks, yes. I find neither a must have. Auto pilot, actually have one. It helps, but I can get sails up or down quite quickly and most of the time, I forget to set it.
Knowing your own boat is the key. How fast she'll fall off or turn up? How she'll react to various weather conditions. Go out in light conditions (deal calm then 4-8 knots) and get comfortable being all over her. Always be teathered when not in the cockpit. Get the feel of her, foredeck, below, cockpit, sails down, sails up.
Then work your way up condition wise till you're comfortable heading out on most sane days.
Learn your sails. Most boats will self-steer to some point. Learn to balance your boat till she'll sail herself. I'll do to some point every time out. Probably the most satisfaction I get when I'm out alone and she's sailing herself. Many times I'll sit ahead of the helm with a sheet in hand and make adjustments to the sails to adjust course.
When other sailors aboard, I'll make a challenge. The loser buys a round. Can you keep her sailing without touching the helm for 15 minutes, 30, or longer. Or how long can you keep her sailing without touching any controls? No sailor likes to be out done. LOL.
One long time sailor friend (85 years old) knew I did this on my boat. So when he joined me on my boat for the first time, he tweeked her sails for must have been 20 minutes before she hit her groove. He kicked back, played with his iPhone for next nearly 30 minutes. Who needs auto pilot?
Sorry. Got off on a tangent. The key is start out slow, get to know her and get comfortable on her in all conditions. The satisfaction is beyond words.
The alternative is paying for a marina condo with six inches of growth on the bottom.
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