Depends where u are
out here theres often mud, snow, slush, soft soil in the off season
and as folks said sometimes marmots love the taste of em
you should be able to set em tips up or down depending on the situation
while i generally agree with nick that a basket under the tarp is more stable
has anyone actually tested and measure it ???
Theres alot of things that gets passed around but folks havent confimed through numbers
BPL use to be good at this kind of stuff
;)