Are there any desalination plants in Australia SDU ? You have enough sea water around you eh !
I agree that explaining the physical folding of sheets, in writing, is not the easiest of things, But when I have draped a sheet over a load, and it is too long down the sides, as it often was, I have never needed to go back on top and play around with it.
For myself, once the sheet is unrolled, everything else is done from ground level. Tuck the excess sheet up inside the outer layer, (avoiding making water traps for when it rains and you unsheet it later!) secure in place with the sheet-ties, then use ropes to finish securing the sheet by pinching it against the rave.
Each to their own etc, of course. 
I never got back up on the load as I had weighed up what I had to do with the sheets first so any surplus sheet was already sorted. I could then get down and quietly pull down the nearside sheets to a nice tidy finish on the chock rave. No need to stuff copious amount of excess sheet up and thereby leaving an untidy bulge right along the length of the load and even a worse bulge where the two sheets overlapped !
Ah, I understand better now. Thanks.
Were there problems with any wind getting under the tuck on top? Or am I visualising it badly again?
Yes you are ! The top of the load was smooth and ,of course, it probably might have been fly sheeted so doubly smooth !
Sorry, but I don’t understand where the excess sheet is then?
What am I not getting?
Folded between the top, right and left corners.
Visualize the edge of the tarp starting at the coaming rail/rave, up then across the top of the load, folded back to the same edge, folded again over the load to the opposite side, repeat under the tarp again if necessary, then down to the trailer floor.
Yes Dennis, there are desal plants of various sizes, dotted around the country. Of course they are a political football. Whichever party commissioned the construction was lambasted for building them, at great expense and cost to run, but come the next drought, if they hadn’t built them, they’d have been put down for that.
Dorothea got it right in the second stanza of her iconic poem, droughts and flooding rains.
The first verse describes where she came from, the second, her adopted country.
Thanks.
I am trying to visualise this, stop me if I’m wrong; So there is a tuck or reef running the length of the sheet, on top of the load?
Yes, all the excess sheet is pleated, on top of the load.
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Yes you got it SDU. The excess sheet is underneath and up and over the top of the load so what you do is deftly pull this part of the sheet down until it is nice and level with the chock rave and can then be tied along its length. BTS trailers always had two main sheets so there was an overlap but it was still a tidy job.
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Derek Linch
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I always rolled them up from the corners and ends then tied them up with the sheet ties then tied both ends together back first then pulled the sheet tight both sides at the front again rolled them up tied them up and tied both sides down repeat with the front sheets. If you got them tight enough you could make a tidy job.
