Sandman:
You shouldn't even need to bungie the cord in, bring the engine down, and it will "crush" into the wood a little and hold it tight.
Thats how I do it on my "little" boat. with a (60 Merc).
~..~..~.. ><((((º>
Things done at the last possible minute are done with the greatest possible information. Procrastination is, therefore, the most efficient means of doing things.