Re: Bringing down the main
Re-emphasizing the "know where your foot is going next" comment and always be aware of all that is going on around you.
I second this. I recommend repeating of proper procedures in sequence to familiarize yourself with a memorized sequence of things. I do my boat prep in a certain order each time like a pilot going through a checklist. So I always have a procedure in setting up the boat and then stowing things when done for the day. Another example, When on the cabin top stowing the mainsail, make sure that the hatch is back and closed every time. That way you will better remember and have less chance of dropping through someday. If single handing, I wouldn't sail with the hatch forward anyway and even on a calm day it is probably best to have some or all of the hatch boards in place. Just in case a gust hits unexpectedly.
Also make sure you see exactly where you are going to step and then be sure to step there. No second chances if you step wrong.
One example of this would be to NEVER step on a sail that is down on the deck. That's a surefire way to slip and hit your head as you are falling overboard.
Also when you are working with loose items such sail tie bungees or a wrench and some boat equipment, make sure that you have your loose parts under control.Work cautiously and think. On shore you can pick up a bolt that you dropped. On your boat, that dropped bolt will go overboard. Similarly, when I am going out to our boat on the dock, i have everything in a zipped up sack or backpack. This includes, car keys and even my watch. Our dock is about 30 yards of shaky fiberglass on aluminum poles and it's very easy to drop something or even step over the edge if you aren't thinking. As an example our 6 year old dog has actually walked off the dock while not watching and I had to go in and get her out of the water.
One can contemplate concerns about procedures and plan things out ahead of time. One can think about what can go wrong when you are preparing to do something like dropping the foresail and this may prepare you for many issues. ONe can also think about conditions, wind strength and if one is concerned, then trust your instincts and get out of there. Mother nature has a way of creeping up the conditions so mind the weather and how it is changing.
Another word after all of this cautions....Sailing alone can be great fun if only because you have no one to distract you from what you are doing.