With only one hand, I'm not much of a wrench. My last road flat fix was a 35 minute affair, and just about froze to death. And after breaking a hip last summer, thankfully on an organized ride and less than 5 miles from a hospital, I have cut way back on what I'm willing to do solo. Now it's strictly cell range, with a family member on standby and with a general sense of the route I'm taking. Much more cautious on the descents. Losing a bit of freedom and spontaneity in favor of peace of mind has been a fair trade.