HELP! Hull is Sagging! I don't know what to do!

I'm not moving the mold. Way too risky. Half hulls need to be perfect matches when joined.

 

Are the hooks as close to hull as possible?

 

Before the next hoist you could take your lifts to local welder and do a modification to get next half of easier and it might help also when you are lifting a half on top of another later..

 

No, I can't. They will become derated and will not be able to lift the load without danger to myself and the hull.

 

Perhaps changing cranes is within your realm of possibility.
http://www.rugerindustries.com/index.html

 

Those are $6000 each.

 

Ouch! My heart! My heart!

 

Used ones?

 

Rented?

 

http://www.vestilmfg.com/products/mhequip/vehicle_jibs.htm

 

Yes, refer to green text. Also there are longitudinal floor and bunk top landings and shelves that can go in at this stage. These will act as stringers and prevent some of the sag as well as lock in the shape while the half is in storage with out the outer laminate.

 

Catbuilder, to gain a few inches simply add a short section to the lifting arms. This will reduce their lifting weights but i don't think this will be a factor in your case. Geo

 

Yes.

This will work.

Numbers are conjectural but the ratios are not.

 

No drilling, bolting or welding of original crane. These would be temporary extensions which slide over the original arms, held on with clamps.

 

Of course the front wheels of the base of the unit would have to be directly beneath the hook at the very least, otherwise it will tip forward, unless you add adequate counter-weights to the back.