The critical dimension is the length from the bow eye to the transom. This will determine the length of trailer you need - from the winch post rubber to the aftermost roller / bunk.
It's surprising how short your hull may be!
My Searider 4m hull is only about 3m long. Fits easily on an Indespension jetski trailer.
What model Humber do you have and what engine. If it is a destroyer, you will need some thing around a 1300kg. swing beam is always the easier to use and most trailers of that size will adjust to take your boat.
War Shot
