Mast transport question

I'd maybe just strap each section to a hull, protecting with carpet offcuts. Done securely enough it should be OK.

But your best bet is contacting the Spint15 association via their website. Sprint Bob is also a regular on this forum (although I've not seen him post recently) and he is a goldmine of info. Try PMing him.

Have you got a mast cradle fitted to your trailer.  I tow my Dart 18 broken down with all the bits (spars, tramp, sails etc.) in the trailer box and my mast lays in a cradle.  It runs the full length of the trailer and hangs over the roof of the car roughly up to the sun roof.  Can you leave your mast in one piece and do the same?

If not, I'd strap the pieces to the hulls or even the trailer if you have a suitable place?

On a separate note, I'd advise taking the tramp off the boat.  I used to have an 'all-up trailer' and found that the tramp adds extra windage when driving - actually slowing me down.  Not that I condone driving at high speed when towing  but it must do something bad to the fuel consumption with all that drag??

if you have a mast support i would use that. in my rs300 i tow the mast with the 2 parts together. run the main halyard down along the outside of the mast (tape in place at intervals) and tie it to something on the lower section and tighten it as much as you can. this will stop the mast separating.

i then sit the mast on a structure i made which fits onto the pintles (you could probably rest yours on the back beam or tramp. tie the mast to each hull (with a wrap around the mast) use lots of rope. bungee is also very good as if you get it tighter it les the thing in question move less than rope does.

(i do this because the lower section doesnt fit in the boat) but if yours will fit ontop of the hull that may be easier. PAD WELL!!!!!