Strap placement
 

Where is the correct strap placement for lifting a fully rigged and fuel filled 382 off of a trailer?

I need to lift my boat to work on the trailer. I have a crane company that will lift it for free, with 8" straps, and spreader bars.

How many straps are needed, and what is the best location for lifting.

I know I should just lauch the boat in a nearby lake, but there are no launches within 60 miles that will accomodate the boat. Therefore, I think lifting may be easier.

Wes