PropSpeed. Put the primer etcher on, let it get tacky, apply a second coat of primer etcher. Then, before it totally dries. apply the silicone, then add some more, making sure no drips. Then, begin painting the shaft, excluding the zinc attachment. Same as the prop, double up the primer etcher and the final silicone coats. My last application with one coat (and an enthusiastic bottom cleaner) was durable for one year. The boat yard crew taught me the second coat trick, learned from the commercial fishing
guys. Supposedly last two years. We will see, as I will be hauling again to install a new centerboard
Folding props need to be disassembled, sanded, cleaned, painted (hanging by a thread or suspended through the pin hole with a rat tail file), then reassembled when dried and cured overnight. Expect some wear on the bearing surfaces at the hub. The key is the color. It should be uniformly gold after multiple applications of primer etcher.