Out on Portsmouth Harbour

Portsmouth Harbour, home of the British navy, is a rather intimidating place for a sculler in a very small skiff. Big, sometimes choppy, lots of fast motor boats and occasionally huge ferries and the odd aircraft carrier.
But today was sunny and still, so I went out to see if I could catch up with the Dinghy Cruising Association and try out one or two gadgets. Well, actually four gadgets, sad sack that I am - mobile phone, satnav, camcorder and digicam. And I used them all.
I needed the mobile to locate Steve Bradwell who had stayed overnight at Portchester after sailing round Portsea Island (Portsmouth is the only island city in Britain). I caught up with him as he was preparing to complete the circumnavigation of Pompey by motoring through the narrow Hilsea Channel that separates it from the mainland. Here he is starting his Seagull outboard and heading for the motorway bridge:

The video was taken with the new (to Britain) Flip Ultra, the simplest camcorder you can buy. Shooting clips is a matter of pressing the red button to go, and pressing it again to stop. Back at base, you can chop out the boring bits and assemble the rest into a smooth mini-movie so easily even I can do it.
Later, I happened on a pair rowing like mad for the harbour mouth in a traditional-looking pulling boat in grp, with a cat rig stowed inside. We took pictures of each other with my Panasonic Lumix digital camera (that's the former HMS Intrepid in the background).Back home, I uploaded the satnav track in .gpx format from my Satmap and discovered that Google Earth now supports .gpx, hooray! But it still won't let you edit the track by removing boring and irrelevant stuff such as tracking my car on the road to the slipway, boo!
Here is an image of my trip round the harbour. If anybody knows how to remove the non-boating tracks, do let me know, please?