Step 1. Sand/Grind all blister caps off.
2. Wipe with clean cloth to remove dust.
3. Prime with coat of West 105 epoxy for a base
4. While the epoxy is still tacky apply more 105 with 407 low density filler. To get a sag-free consistency it takes quite a bit of the 407. The plastic applicators work great and conform to the hull. Apply liberally.
5 Let dry for at least 24 hrs before sanding
6 Apply another barrier coat of epoxy.
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