I sail solo most of the time as well.
The big difference between having crew and not is that I try to anticipate things far more when I'm alone.
I always have my lines flaked and ready (or draped over the lifelines etc.) when approaching a dock. I have my boat hook extended and within easy reach. I always have my anchor unhitched and the rode flaked before entering an anchorage. When I have crew the anchor is generally prepped as we are in the channel. When alone, I always stop and check to ensure that all lines are running free and look for trip-hazards etc.
We always wear PFD's regardless of conditions, so wearing one when solo is not an issue. What's different is that, when alone I run jacklines and clip on when leaving the cockpit.
When I'm alone I tend to get a much earlier start in the morning. I usually don't have an itinerary so I might stay at an anchorage for a couple of days or a couple of hours, depending on my mood and conditions.
As much as I love having a crew on board, I think I secretly prefer to be alone on the boat. Maybe not so secretly.
1989 Hunter 30'
Southern Georgian Bay
The sea, once it casts its spell, holds one in its net of wonder forever. - Jacques Yves Cousteau