Could anyone describe a city at night?
depending on the grade of stainless , you may not have a problemHowever to be on the safe side nail varnish will do the trick, or a good silicone sealantI presume you are trailing and not leaving it on a mooringscrews certainly stainless or monol rivets
As Mark said, you should have some time, should you directly fasten the twoOnly thing I'd add is to paint the (aluminum) area to be bedded with Zinc Chromate before you mate and bed anything.
Never use rubber near aluminium or stainlessYou would bed the fittings on sikaflex compound to seal against water entryDuralac compound is ideal for preventing corrosion due to dissimilar metals - use per directions on the tubeBasically apply one coat to all surfaces, let dry, apply second coat and attach fitting/screws etc while wet316 stainless, use large washers and possibly a load plate to spread any loadings on the screws.
Night never met a town it couldn't blacken until it met New York CityFrom the International Dateline on its way east across the continent, the evening of March 4th had encountered many an easily flattened village of sleepy farmers and suburbanites, batting uselessly at its ebony back with candles, flashlights and bonfires, all sent effortlessly to dreamlandBut New York, ah, there the night had met its match! For the city seemed to be lit from the inside, a billion candelas and pinpricks of luminous incandescence wrapping the whole of five boroughs in a protective web of energyThe electric symphony from shopkeepers' windows hit the river with the intensity of ten thousand full moons and bounced, bounced, bounced, all the way to the windowsill of high-spirited children craning their necks through the curtain for a glimpse across the great suspended passageways that connected the cityHow could they sleep, however sternly their parents demanded it? To lie in bed on a night so bright, full of people and adventures so much grander than their own dreams could measure, would be like turning one's back as the Macy's Thanksgiving Day Parade passed one byAnd perhaps this could help explain what happened next.