Dick,

Thankyou, very informative- not sure if any of these classes are operating in NZ but will do some research.

Still sure I will go the 1.2mt size as this size fits in most vehicles with ease (have found this is optimum size in my RC powerboats for transportation.

Will build at beam at 85% of LOA (thankyou Multiman for heads up on this).

Unsure of sailplan and mast height /rig but plenty of time to work thru this issue.

The thing that really troubles me is the instability of these model Cats.

It seems having read thru forum that the the biggest issue with these boats is preventing pitchpole .

So if built to scale against say the 70ft version I captain, then I would need to have a model that weighs many tonnes to provide the required balance.

On the otherhand if the scale model was based on say a nacra then the scale weight could come right down- but of course small performance cat's absolutely require a crew on the windward rail to acheive high speed and balance.

So this got me to thinking the only true way to replicate any full size performance cat is to add ballast on windward rails.

This could be done with a third servo and is the way I will build.

With respect to sales and production- we are a family boatbuilding business(full size) and think it would be great to have a product to sell- people do think our power hulls are pretty special( we tool up and build productuion moulds for all our rc boats) however, whilst we have dabbled in selling the occasional hull and deck, we will not put a website online until we are 100% happy we have ironed out all issues with design and build.

Once again - thankyou Dick - it would be fantastic to have a f48 class down here- hopefully we could make it happen.