And more importanty, what equipment do you have and what skills do your teammates have that may help you?
I used to work on a Ropes/Challenge course in Poland, ME. This is one of the best things I figured out while working there and watching people do the different elements...
There are three things you need to ask and answer.
First...Exactly what is it that we are attempting to do? What are the conditions?
You said, get everyone across, all the gear across. Someone is allowed to touch the ground once.
Second? What equipment, things do you have that may be of assistance. This includes material items (ropes, carabiners, pulleys...etc). It also includes special skills that you and your teammates may have.
Finally, what exactly are we going to do to accomplish the task? What is the plan?
There are many other questions you could throw in here....what may hold us back. Is there a teammate who is afraid of heights? Has a certain person been known to tie bad knots?
Also, what hazards exist that require special attention?
So before I suggested a plan, I'd like to know what tools, equipment and skills you have available to use.
Otherwise my smart-alleck answer would look like this: Put everyone in tree with a bucket truck. Person a crosses to second tree, rappells down, walks to bucket truck, works the controls to get the buck back to the first tree, another person gets in, ride across, raps down, while first person repeats until entire team is across. Then person 1 puts the boom of the bucket track back down (folded up), hops in the drivers seat, and drives over to team two....Viola! Everyone across and down, I only touched the ground once, and I drove the truck across!
But I know it can't be that easy.
love
nick