As explained in the other thread... Posted by: bnystrom on Jan-03-13 7:16 AM (EST)
...it's a waste of time. More than likely, whatever you smear into the cracks won't seal them and is likely to make the boat look worse than if you just left the cracks alone. If you're determined to do something, make sure you use a sealer that does NOT contain silicone, as silicone residue makes other repairs very difficult.