Sometimes sailors and/or guests fall overboard! And failure to reboard can be fatal. It can take a lot of strength ... which diminishes with age and rapidly (or everyone) in cold water.
Every crew (solo or not) should conduct reboarding drills. PocketShip has two features that help in reboarding. The wing on the bottom of the rudder can be used as a step and the supports for the gallows provide good purchase for pulling yourself up-and-over the coaming. To these features can be added some enhansments. The rudder wing-step can be made more useful if the tiller is immobilized. And you can add another step on the transom as shown in the photos.
When warm weather arrives I plan to test my ability to reboard. I'll be sure Tattoo is anchored in waist-deep water and there is someone available to help (if I fail).
Note that although it may be convenient to "lash" the tiller when under way, it does have a "safety" drawback. If you fall overboard and your tiller is lashed and the sheet cleated, the boat may just sail itself away from you ... leaving you miles behind! I know that one shouldn't cleat the main sheet on a small sailboat. But if the wind is modest and steady and you are using a "quick release" jam cleat, it is tempting and sometimes necessary to give your arm a rest, use the UHF radio, etc. Just be careful not to simutaneously cleat the main sheet and lash the tiller.