how young

When my wife had our first little boy i was stoked, i had to sell my board to afford a few items and was gutted. Now hes 18 months and i have been putting money away to buy a new board for all of us. Its going to be a long board so my wife and little boy can get started.
I'm hoping to go tandem with him, but how old does he really need to be? I was thinking something like 5-7 before he had the strength to hold on in the North sea
I'm hoping to go tandem with him, but how old does he really need to be? I was thinking something like 5-7 before he had the strength to hold on in the North sea