Gluing On Scotty Mounts

[jmach]

I have a Scadden Renegade. I would like to glue on a Scotty mount and put a Triple Rod Holder in it. To glue on the mount, I have a few questions:
1. Is Stabond the best adhesive?
2. Should I scratch up the bottom of the mount with a rasp? I don't want to scratch up the Renegade itself.
3. Is it best to apply the Scotty mount with the Renegade inflated?
4. How long do I need to apply hand pressure until I can feel assured that the mount is secured well?

Many thanks.
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