Hi.
We have about 9 of these models in our Club - Manx Model Boat Club, they are being suitably modified to suit the individual owners, as can be appreciated on the Isle of Man fishing was a way of life so we have a good scope for rebuilding.
I take the point of the nav lights, the ones fitted to mine were wrong way round but can be easily modified, if you fancy fitting working lights modellingtimbers.com do a nice line in sub miniature bulbs(smaller than grain of rice but good and bright) in the colours needed these are 3 volt so one of the AA small battery carriers can be hidden within the model with very little extra weight, an added bonus they have nice long leads so they are easily handled.
On my model I am going to varnish the underneath of the deck, then run a thin layer of silicone around the hull inners, put some vaseline on the deck underside and fasten it down, by doing this I hope it will form a seal preventing water ingress once the silicone has set the deck should be neater fit, all in all they are excellent value for money.
Howard Q