The extra 0.05 will make no difference visually imo. It'll not behave as well though. I can't stand fluoro in higher diameters.
The min diameter has been bought in due to the heavy weed growth. I agree with emmcee, the last thing you need is all that fluoro sinking into the weed - you're halfway to getting fish weeded up before you even have the take imo buddy!
Place I fish does not allow stalking, or free lining any floating baits. Have to stick to your peg.
I'm stuck in Leicestershire, and there is not a good choice of places to fish,
If I'm not mistaken tiger line is fluorocarbon line , therefore sinks. Why would you want your line to sink into thick weed or onto a very rugged lake bed?? That's just asking for cut offs in my opinion.