Sorry bushwhacker but felt soles are lethel..... but have you ever walked thru kelp or heavy weed in them ???? I got felt soles eith studs when I first got bisons never again lethel on a muddy cliff and just as bad on a kelpie scaur I fell twice first outing thet soon got swopped for vass wellies[/QUOT
When i,m fishing i am wading in fast flowing water up to my waist and walking on all kinds of terrain,from slimey smooth rock to muddy banks.
After doing this for 40 years for sometimes up to 10 hours a day,felt with studs are the best i,v used.And i,v tried them all..
The felt gives grip on smooth slimey rock and weed, the studs grip in the mud.
The type of studs also makes a difference.The "cheap" bolt headed type are useless on smooth rock.
These are what i use.
Fly Fishing Wading Accessories / Posi-Grip™ Replacement Studs -- Orvis UK