There are things that can be done to allow easier deciphering of the SI images on the 5" display...
Set the SI Range to a shorter distance...(I rarely scan past 65ft even on my 10.4" screen)...
Set the SI image to 1 side only...(this is almost like a zoom function of the entire half of the SI image)...
And, of course...a zoom box can be opened on interesting items in the SI image...
Remember the 5" HB screens actually have higher resolution than any of the larger screens...(and this feature really shines when a zoom box is opened)...
Rickie