So i just bought my first sailboat and it is a Neptune 24 in really good shape or it looks that way and i got it for a good price. The previous owner was super nice and knowledgeable about the boat and was very open with it and let me know about all the minor probles that i would need to either repair or replace. The interior of the boat is in good condition and the exterior has some paint fade and a few dings and scrapes but looks great. The previous owner was very confident that if i replaced or patched the jib (a mouse got at it in storage) it would sail beautifully tomorrow. I brought it back home and my dad, who has owned motor boats his whole life but never a sailboat, seems to think that a boat that has been out of the water and sitting on a trailer in garage storage for 5+ years may have some stress cracks in the hull and is skeptical of its seaworthiness. Is there a way i can test if it has hull leaks without putting it on the water just to watch it sink if he is right? Also, what are some good websites i can look at for replacing sails and other sailing equipment? I'm exited to get into this new hobby but i want to play it safe.