More YACK Questions.

I'm a pretty good sized dude at 6-3, 225lbs....

1) Are yacks really made for smaller people or should I able to find something that accommodates a larger dude?

2) Im assuming that the bigger the yack the better for a big guy but is there a general rule of thumb for yack size (length x width) based on your size?

One more set of questions.....

I have a 1 year old and a 2 year old. Im thinking that in a few years I'd probably like to take 1 of them out with me every once in a while for a "yack'n day with dad" (I can't imagine attempting to take both in a yack with me at 1 time) so.....

3) I'm assuming that if I plan ahead and buy a 2 seat yack that I can still use it by myself right?

4) A 2 seat yack won't be too large and awkward for 1 person to operate will it?

Just to be clear...I only plan on fishing some of the hundreds of small lakes in central FL, not doing any high speed river yack'n or aggressive stuff.

TYI for sharing any productive thoughts.