I've never had the Slipped Bowline give me any trouble on hammock
suspension line or my ridgeline. I use a home make Speer with low
friction, hollow braid poly line for the hammock suspension line and
it easily slips the knot when it is unloaded.
On my tarp ridgeline I use the Slipped Bowline for the first tree and
then use Ed Speers Four Wrap Method on the second, smaller tree,
finished off with 2 half hitches. The Four Wrap Method (or 2 or 3
wraps if the tree is larger) allows me to tie it while the line is
taut and is easy to untie, especially if you finish off the 2nd half
hitch with a slip loop.
Knots are kind of neat aren't they? You can't always use your
preferred knots and need backup plans. If I don't have enough line
for the Four Wrap Method I will use a Slipped Bowline for both tarp
ridgelines and then work the Taut Line Knots that I use to attach the
ridgeline to the tarp to get the tarp taut. The Four Wrap Method
comes in handy when the spacing between trees isn't much more than
the length of the tarp and in those cases I will use the Four Wrap
Method for both knots. (I guess I'm using somewhat of a logic diagram
for which knot to use in what condition.)
I am switching to the Highwayman Hitch to suspend some of my stuff
sacks to my hammock suspension line or tarp ridgeline. It holds
better than the Slip Clove Hitch I was using and I have more
confidence in it holding all night during high winds. Thanks for the
work you are doing.