A bit of advice, check your insurance policy. Our insurance has a couple of clauses that affect boating on this stretch in that we have to be in company with another boat also that if single handed you must wear a life jacket..
The lock keepers at Limehouse will normally help with ropes but I personally would be wary about single handing on the tideway. I have known of a few people break down on narrowboats on this stretch. It is a scary experience, having to use your anchor or have to breast up/tie up on tidal water whilst single handed is not something I would want to do.
Tim