Join Date: Aug 2001
Location: Clearwater River, Peck, ID
I haven't done a conversion like that but I've gone the other way with the "junkyard spey", 8.5' single hander (8wt) to a 12' double hander. Two line sizes up worked out quite well for spey casting.
Put the scandi head on there and start short. In 5 minutes you'll have an answer to your question.
Poppy=Red Shed Spey Rod Pimp
How you get the line out and fishing is personal preference so as long as it works and is easy no one should care but the caster. MSB