The Hobie class states a maximum of 50 lbs. may be carried to make minimum crew weight and minimum crew weight for the H16 is 285 lbs. In other words, a quantity for the minimum crew is not specified, in fact, the rules state if with two crew persons more than 50 lbs. need to be added an additional crew shall be carried (i.e. one adult and TWO ten year olds). Side note; Tony Probst (CA) raced single-handed in the H20 Nat'ls (and scored a bullet).

All that said, why not take the under weight portsmouth hit and race singlehanded in the open class. For that matter why not on a Hobie 18? I've always felt more comfortable singlehanding the 18 over the 16 (and I weigh 160).

Bill, If you wan't to start out cheaply with a H16 or TheMightyHobie18, check in with the pulse of the closest Hobie Fleets. They very well may know of the used Hobies for sale.
TENNESSEE
134 Gerry Wilder Memphis 901-755-5464 15
249 Jon Sheridon Nashville 615-383-7266 15
GEORGIA
12 Tammy Duran Atlanta 770-531-0397 9
NORTH CAROLINA
92 Jeff Price Charlotte 704-892-1936 9
97 Sam Evans Raleigh 919-544-4521 9
100 Kyle Harrison New Bern 919-304-6167 9
170 Ron Walters Lake Waccamaw 910-642-0625 9
191 Tom Sutton Greensboro 336-282-3106 9
SOUTH CAROLINA
53 Steve Shapiro Charleston 843-795-3026 9
164 Dave Strickland Simpsonville 864-801-1625 9
174 Ted Watts Myrtle Beach 843-651-6931 9
520 Buzz Moore Hartsville 803-332-6103 9