I love this stuff but you need to understand its properties and when to use it and when not to.  1. It only skins over in about 24 hours and takes up to 7 days to cure a 1/4" bead so it can only be used when the item is not going to be disturbed before it cures.  This does help it from hardening up in the tube and I can usually keep a tube around all summer on the boat for small sealing jobs. (There is a Fast Cure 5200)  2. it is very strong once cured.  They claim it is for permanent applications.  It can be cut to remove an item but the residue is almost impossible to remove.  3. It is very messy and not as viscous as other sealants so caution must be exercised to get a good application.  Don't let it drip where you don't want it.  Set the caulking gun on cardboard when you stop dispensing and relieve the pressure.