Time for a bit of data.
From Swanley Bridge Marina to Stafford Boat Club is 58 miles. With 41 locks. We managed to do all this in 19 days, of which 8 days of cruising.
average cruising per cruising day: 7.25 miles
average cruising per calendar day: 3.05 miles
locks per cruising day: 5.125
cruising every 2.375 day
total engine hours: 41.3