Can anyone recommend a product for cleaning canopies? I have tried a couple and I haven't found one that wasn't either too abrasive or left streaks.

You should not use any petroleum based cleaners or polish. The best thing to clean them with is cheese cloth and alcohol/ water mixture. Spray liberally with Rain X and buff with a soft cloth. They will scratch easily. You should also keep it covered as exposure to sun will eventually yellow it. Clean and rain x them in the shade.

Hey BIG Daddy use NOVUS 3 part system they'll look like brand new ....

Do you mean http://www.novuspolish.com/ ?

At the shop. we use PLEXIS....available at most good motorcycle dealers....great on gel as well, does NOT remove the wax base...

good coat of wax and I use Mcguiers multipurpose wipes on them for the weekends. Goes on a lil wet then polishes off easy. leaves a nice streak free clean canopy behine. They also come in a nice lil pop up canister thats fits in the glove box.

Thats what i use as well
It's not cheap but works great on the canopies and dash components as well. (gauge faces etc...)

Cleaning of your canopy once or twice a year will keep it looking good. There are some home made methods are also available for cleaning a canopy. You should try that. In this way you can also save cost of expensive canopy cleaning products. Just try this....

pop up gazebos
pop up canopies

So how would a sleek offshore look running down the lake with 1/4 gazebos or a full wrap around????

I think this is a time when Google search was a touch off base