Free “Sail-A-Dinghy-Day” at Shoreline Lake Boathouse (Mountain View) Shoreline Lake, in Mountain View, is holding its second Sail-A-Dinghy-Day on Sunday, April 6th, from 10am to 4pm. A hit when launched last year, once again, visitors to “Silicon Valley’s best kept secret” will get access to free skippered sailboat rides, helmed by Shoreline Lake’s ...