Bought a small container of marine-tex white to fill some gouges and nicks along the strakes of the bottom of my boat. Followed directions and ended up with a material that was about the consistency of 5200 sealant. It was very sticky and hard to apply. After about 15 minutes, the material set-up in the mixing container and was too stiff to use. Outside air temp was 97+/- degrees so knew it would set up quicker but that was fast!. I was expecting a material that was a littler easier to work with - something that I can shape easy but wont stick to a putty knife, fingers, etc. Any suggestions or other products to try?