Ha! classic response Steveooo
.........sorry to hear you lost your arms......and legs.
If I were tackling this I would be confident in cutting and welding it into place but would be concerned with how to back and brace it as it would be putting a lot of stress on that weld when lighting that candle. Then there is the launching and landing to take in to account. The cut out like on the mirage drive to make it removable would be ideal.
Years back a friend of mine took a part a 30# thrust motor and mounted it so it was not seen in the least. He acted like he was leisurely paddling as he nearly kept up with a rowing crew when he took it out for a test run in the bay. We are no longer friends, but I don't think that had anything to do with it.