HI Dan-
We ended up using Speedcoat back last year as the WX block regular stuff was backordered and unavailable when we needed it.. While it works ok, it is just not the same as WX Block II original creamy stuff. Speedcoat is no hack, no short cut. WX Block leaves the ship slicker longer and is just better. The WX seal is a good cleaner and prep for the second part, the block. I have used other boating products with similar success but even as pricey as it is, WX Seal and Block (they swapped the position of the words!) is hard to beat. Follow the instructions, use a cotton cloth to apply, but definitely use a microfiber to remove. That really gets you a great, long lasting shine.
We ended up doing other polishing work, sanding some crazed gelcoat and polishing with 3M finesse-it. Good off season work.
Hope that helps, and good luck!
Joe Flores
MGSA