Most important mate is
Know the capabilities of your boat. Get to know your boat in calm conditions first, and progress from there.
Be aware of how varying conditions may affect any bar crossings you may have to face. Make sure you have all the correct safety gear, in good condition and easily accesable.
And be sure of your own capabilities.
If you are unsure of any of the above, have a chat to your local VMR and other local fisho's, who can share thier knowledge with you. Hopefully some one from your area will pop up on here to give you some advise. Where are you intending to fish from?
Regards, Tony