Prehaps to make it clear to you when the line is quoted out of context I should have said
and often no APPARENT reason why something goes wrong, it just does
Cracked hull could be caused by;
Failing repair done some years ago after major accidental trauma
Hitting a rock or other under water obstructions resulting in symptoms manifesting them selves some time after the incident
Repeated drying out on uneven surfaces (Craft can dry on the same point, litterally, once we had a ridge caused by an RS J in the mud under a drying boat)
Simple failure of the hull after life expectancy surpassed in either hours of use or years of life
Items crashing around in side the hull
Unauthorised modifications to the boat
Unsuitable use practices (pushing 15 m race yachts at full throttle for prolonged periods with the tubes soft to get a better grip for instance, load thus borne on the hull)
The list is almost endless and though the sympton can often be the same the cause sometimes is not.
Patient on phone to a Fracture Clinic: Dr Dr my foots hurts I think I must have broken it
Dr: Ah you must have broken it.
Patient: That is what I think
Dr: I agree
Patient: Then the axe stuck in it has nothing to do with the pain ?
I do not think any of us can with out all the facts, motor hp, who & how installed, exact age of craft, sight / pictures of craft inside and out, trailer, method of strapping, idea of use it has had offer any view on an idividual case.
Hopefully I will get these and we can take it from there.