Taking my new/used 1979 Evinrude 15 two-stroke out for the 1st time to troll for Kokanee & Eagle Lake strain Rainbows this weekend. Plug # on the boot is L78V and am running a 50:1 mixture - will this plug do for slow 1 - 2 mph trolling or will I be fouling plugs? What is the next hotter heat range plug I might consider?<br /><br />PS - lake elavation is approx. 500' above sea level.