I'm looking at installing a bimini top. The top that came with the boat snaps directly to the windshield and seems too low and too short in length to keep all the passengers out of the sun. The top I'm interested in is higher and longer (it's 6.2 feet tall, 8 feet long and doesn't snap to the windshield.) The poles are offered in heavy duty aluminum or stainless steel. Are the stainless steel poles worth the extra cost? Is the extra weight of the stainless steel poles a consideration?. The fittings would be stainless either way. The boat is a 21 foot cuddy cabin.<br />- Thanks