Mariano,
I'm sailing my H16 for some years now - mostly alone. Tried to sail with mainsail only but found only disadvantages. Tacking is at least difficult, jibing better solution. Also making speed not always easy. With proper trimming and use of both mainsail and jib travellers I can manage quite well alone. Only righting with to less wind turns out to be tricky: I need a bag filled with water. With more wind no problem...
Good luck
Eddie
Hobie 16 # 99173