Consider the formula 16 hp class of boats:

Taipan 4.9 (AHPC)
Stealth (Stealth marine)
Spitfire (Swell)
Jav 16 (Bimare)

These can all be sailed with one or two people; they are very light; they can be righted, rigged and moved around by one person.

For more information check the F16HP web site:

http://www.geocities.com/F16HPclass/

Other boats with less performance include Nacra 5.0, Nacra 4.3, Mystere 4.3, Hobie 14.