Re: Need a GOOD pontoon Cover.. Wind and Rain proof.
@BoatingBob,
Ditto what others have said. See if you can find one "off the shelf" here on iBoats that is made specifically for your boat. Not a universal or semi-custom. If you find one, consider yourself fortunate. Choose fabrics well...if possible get samples before you order. There are big differences in weights (bulkiness) and water resistance. I opted for waterProof lightweight with vents.
If that doesn't work, find local boat cover shop that has mucho experience making full playpen/mooring covers for pontoons and sells the supports, vents, etc. Others in this thread mentioned this could be in the $700-$800 range. If that pricing works out for you, consider yourself fortunate. For my 25' toon, I was quoted $1200 to $1400 from local reputable shops.
If that doesn't pan out, you'll need to find a company in the US that can make to order a cover for your boat and ship it to you. That's what I had to do (PM me for company name and URL). Got it this week for my 1997 Sun Tracker, and it is as advertised, and exact fit. Cost me over $800. But I was SO tired of using a storage boat cover and my homemade support system.