Good moorings and welcome at the various boat clubs along the Nene (Nen in Northampton). Last year we were stuck on red boards for a week at Oundle BC and they were most helpful and there's a washing machine at the marina. You may also find a dumpy screwdriver helpful for those lock wheels although at least one was a real chore. Annoyingly, when coming upstream, some boaters don't follow the rules and leave the guillotine gate down when exiting the top gates. You then have to wind the gate up, down and up again. If you are really unlucky you may even meet @matty40s of this parish 😆😆😆
If you want adventure try crossing the Wash from Boston to Wisbech. Longer boats can only pass through Grand Sluice at Boston for a few minutes when the tide makes a level with the Witham so going from Wisbech to Boston needs careful planning. A pilot is more or less essential and Daryl Hill is your man.