Outboard VS I/O

Can you turn the idle down that low on an outboard? I had an old 1984? 75 HP merc on a whaler and I could never get that thing to idle slow enough. If I did it would occasionally stall, carbon buildup, etc. The thing used to shreik like a SOB when running too. Drove me nuts. Thats why I went to an I/O. Don't have the cash for one of those new 4 stroke OB's either.

Tried the drift sock idea and got my line tangled up in it. Wind shifted and I almost cut the thing to bits w/ the prop....only good to slow a long drift like for flukin maybe.