..... After hitting it with a wire brush on a drill I realized that 90% of the deck was still covered with Slip Plate.. I thought the silver i was seeing was bare metal, but it was the slip plate..
Brian,
Have you tried washing the bottom of the deck when you are done mowing for the day? I've had a can of slip plate on the shelf for a while and think I'll try it this season. Presently I use a 4' length of 1/2" pipe with a street ell on one end with a 3/16" hole drilled into a pipe cap screwed on the ell. The other end I added a 1/2" ball valve and then adapted it to garden hose fittings. I does pretty well, I hope adding the slip plate this season will work even better.
kj