There's some useful info
here.
As regards the advice - watch the weather, a SIB that size has a limited ability to cope with waves! In my 2.7m, I find that the practical limit for enjoyable use is a F2/F3, and even then it needs to be in the shelter of the shore.
On a personal level, wear a PFD/lifejacket and carry a VHF or mobile in a sealed bag.
Enjoy.