An inflatable obstacle offers another source of friendly competition.
{"Image Make": "Canon", "Image Model": "Canon EOS DIGITAL REBEL XTi", "Image XResolution": "72", "Image YResolution": "72", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Adobe Photoshop Lightroom 3.6 (Macintosh)", "Image DateTime": "2013:04:29 10:41:43", "Image Artist": "unknown", "Image ExifOffset": "242", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "820", "Thumbnail JPEGInterchangeFormatLength": "15093", "EXIF ExposureTime": "1/200", "EXIF FNumber": "9", "EXIF ExposureProgram": "Manual", "EXIF ISOSpeedRatings": "200", "EXIF ExifVersion": "0230", "EXIF DateTimeOriginal": "2013:04:27 12:31:19", "EXIF DateTimeDigitized": "2013:04:27 12:31:19", "EXIF ShutterSpeedValue": "477741/62500", "EXIF ApertureValue": "126797/20000", "EXIF ExposureBiasValue": "0", "EXIF MaxApertureValue": "4", "EXIF MeteringMode": "Partial", "EXIF Flash": "Flash did not fire, compulsory flash mode", "EXIF FocalLength": "24", "EXIF FocalPlaneXResolution": "3888000/877", "EXIF FocalPlaneYResolution": "432000/97", "EXIF FocalPlaneResolutionUnit": "2", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Manual Exposure", "EXIF WhiteBalance": "Auto", "EXIF SceneCaptureType": "Standard", "EXIF CameraOwnerName": "unknown", "EXIF BodySerialNumber": "2171218355", "EXIF LensSpecification": "[10, 24, 0/0, 0/0]", "EXIF LensModel": "10.0-24.0 mm"}