Avoiding DETECTION-Plz Help!

[mino]

Hi Again Gang

With the help of MANY on this board...I am getting thru the game slowly, and in yes, newbie, arcade style to start at 0% realism, to get to know all the controls and game etc...

heres my MAJOR PROBLEM

in missions courageous, and especially in 4th, think its happy times, where I must travel all east thru the gibraltar straits...
I have read all the posts, and the walkthru tips for this mediteranean mission, but Im always 'found'

how come when I:

I go to :run silent, go deep, and under 3 knots, they all come right OVER ME, and drop charges,,,then I speed up and try to evade out, and its now fast enough,,,I evenutally flood and end it all,,,truied about seven times, these 2 missions,,,,

WHAT THE HECK AM I DOING WRONG

I really love this game, but seems no matter what I try, they FIND ME IN SILENT MODE, under 3 knots, and deep,,,how do I fix this?

thnx