Hi Tom,

re. Kevlar outer laminates versus Fibreglass, my understanding and experience with Mossies that have had this option for a while. Is that there is little difference in stiffness, what Kevlar offers is "Bullet Proof" hulls, ie. what would puncture a glass hull will only dent a Kevlar hull. Great if you get run into, which happened to me, just a dent to deal with not a break. Of course it is still possible to crack them but more difficult than glass.

My understanding is the stiffness of the hulls, is reliant on what else is used, for instance Carbon cloth in the laminates inside or out, reinforcing frames, bulk heads, stringers etc. Even the density of the foam core makes a difference, especialy to how easily the hull dent.

Of course I am no expert, just a back yard rebuilder of my own boats, many people made the statement of Kevlar Mossies being stiffer but that was not my experience, in fact if anything they seemed to dent easier. Of course if what I say is true Kevlar inner laminates make little sense at all.

In a nut shell Kevlar for strength, Carbon for stiffness, Fiberglass for allround properties and lower price.

Regards Gary.