Fifteen Zapcats competed over 16 heats during the day.
Whilst the surf was not enormous the offshore wind proved to be a challenge.
For 2011 there is a new twist with two Championships, each based on the combined weight of the crew.
Zapcat 03 - Team Suffolk.
Zapcat 40 - Scardey Cat II - Pilot Russell Sidney - Co-pilot Sandra Sidney.
Zapcat 25 - Angry Hornet.
The offshore wind lifts the hull.
Zapcat 01 - Bluesheets Racing I - the 2010 Champions - Pilot Craig Davis - Co-pilot Rob Martin.
Zapcat 12 - Crest of a Wave - Pilot Pat Moger - Co-pilot George Moger.
Zapcat 13 - Live Wire - Pilot James Millest - Co-pilot Luke Monro.
Zapcat 14 - Contact wait out.
On the inshore leg the wind gets underneath the hull.
And over they go.
The crew are able to wade ashore as the rescue team quickly responds.
It's going to take a while to dry out the engine!
Zapcat 74 - Trademymotor.
Zapcat 28 - Westgate Builders - flips over.
The rescue team check the crew are all AOK before righting the zapcat.
Zapcat 44 - Who the hell - rides the crest of a wave.
The offhore wind gets under the hull as the Zapcat leaps into the air.
Zapcat 38 - Speedy Hire.
The start of a heat.
Tight turns at 50mph.
Zapcat 26 - Team Essence - Pilot Jamie Stickler - Co-pilot Rich Howe.
Zapcat 77 - Team Relentless - Exe Jets - Pilot Robin Wickham - Co-pilot Graham Hay.
The results for Round One
ZCR50X - heavyweight section - 1st Exe Jets, 2nd Team Essence, 3rd Trademymotor
ZCR50 - lightweight section - 1st Angry Hornet, 2nd Bluesheets I, 3rd Speedy Hire
The winners of the Cornish Rattler Zapcat Fistral Grand Prix
1 = Bluesheets I
1 = Trademymotor
3 = Angry Hornet
3 = Exe Jets
All images © Ian Foster / fozimage