Its a shame there is no nautical equivalent of a SORN for cars, so at the moment if its in the water it needs a license.
.........This year no summer assistants will be hired and, although some seasonal reliefs will be employed there will be fewer than last year. Cuts in the departmental budget are predicted to be around £1million..........
News on telly this morning had a report that EA were asking for volunteers to work as assistant lockies on the Thames.
I just paid £1100 + on The Thames.Its quite a bit more up above Allington lock I think 300 quid for our 23 footer, but still cheap compared to your 800!