In quick flashes a mimic of a trapeze artiste

                                                                     Attribution: Foto von Hydro bei Wikipedi

Image: Wakeboarding Flipping Over (here)

the 12 given words:
fade kick flip limit  flash mimic 
state insulate spin rim line park

Wakeboarding was developed from a combination of water skiing,
snowboarding, and surfing techniques. A rider can go towards and 
up the wake and launching himself into the air. This can also be done 
by riding up a kicker (a jump) and throwing backflips as a show
Using a smaller wakeboard will make the wakeboard feel lighter, 
and spin faster. Some boards are specifically designed for cable parks
                                                                                        - Wikipedia

Water-skiing seems pale in comparison

Now faded, wakeboarding a logical extension

Riding up a kicker and throwing back-flips

Tests the limits of a show jumper at the deep

In quick flashes a mimic of a trapeze artiste

In a state of frenzy a spectacle hard to resist

Without a net but insulated by the water expanse

A spill spells no danger in any event

With smaller and lighter wakeboard to spin faster

Avoiding rims of the jumps to spare from danger

Move off the line, you old fashioned water-skiers!

Now specifically designed for cable parks'  'fliers'

Brenda's Sunday Whirl Wordle #270 and
Mary's at PU's Poetry Pantry #324