Reg is right,inshore fishing in shallow water may be worth doing,but cant see much benefit in fishing deep water at night,but as reg said check your kit first and give it a go,might be worth squid jigging this time of year.Expect congers and lots of them, not funny unhooking them at night. Now if you were inshore fishing on sand you may well have a good night sole bashing, maybe even the odd bass and smooth hound on peeler. Check your nav lights, electronics and battery power before your trip.
Good advice,keep an eye out for any boats moving the hazards and dont just blast through on your course.We used to leave in darkness in the early hours to catch the macky,we knew roughly what pots/nets were around but i was allways up front on watch for any surprises,getting in trouble at night is very,very frightening!!!!(been there,done it).I say 'go for it' Chris particularly if you're after congers. I love night fishing from my boat and find it very exciting.One important piece of advice that i was given when i first went out, and have found invaluable is;
Go to your mark during daylight avioiding any pots, nets , hazards etc.If you return during darkness, follow exactly the same trail home on your plotter hence avoiding those hazards. However, take it slow and keep your eyes open.I do have a searchlight but find it better on clear nights to allow my night vision to adapt.
The usual advice regrding nav lights, anchor light etc apply.
How about trying just off chesil beach at night for the cod??Night fishing inshore can be better than in daylight but the advice from others is spot on, it is more difficult and even simple things are much harder to do. Braid tangles and other more difficult things are a nightmare.
It gets a lot colder at night so take plenty of warm clothing, it also seems rougher when you can not see the waves.
torches/ headlights and spare batteries are also essential