Convertible top waterproofing products

["Ian Lomax" <sfalfisto@domain.elided>]

Anyone have any experience with water sealing or waterproofing products
for the Alfa Tops?  My canvas top seems to leak during heavy rain, and
I'd like to try sealing it before I go and do anything drastic.

The two options I see are:

Thompsons water seal - should be available locally, meaning I can apply
tomorrow.

Renova Ultra Proofer - supposedly made specifically for this purpose,
but I have to wait who knows how long for mail order.

Any experience welcome.

Thanks!

Ian Lomax
71 Spider - a bit leaky in the Bay Area's current monsoon.
Redwood City, CA
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