Hi mate, I spent about an hour watching boats going out and coming in yesterday at T weed bar the tide was going out when I was there but it wasn't to bad. I saw quite a few small tinnies in the 4.5 to 4.8 m range coming in. One boat that did impress me by the way it handled the sloppy conditions on the way back in was a Quintrex Renegade 4.6m it seemed to handle the conditions really well. It appears that all of the boats were keeping to the northern side when going out. As they got to the end of the northern wall they would turn north again to avoid the messy water in the middle and the southern side of the bar, they held this course for a few hundred meters until they were clear, they came back in on the same course. You would want a fairly calm day to cross in a 4.35m boat and I would not venture too far out in case the weather changed. As you stated before go in and out on an incoming tide, you must wear lifejackets crossing a bar in NSW , inform coast guard of your crossing, and have all your safety gear. Good luck.