I'm edging up on 50 GSM and haven't touched any other crafts yet. So far my go-to strategy has been to fish for good with Great Strides up. Basically using Great Strides at every opportunity, then popping my other abilities and edging progress up for two turns unless a 'good' shows up. Strides converts the +~50% bonus from 'good' into +~100% bonus. I'm going to start going into other crafts soon [not legacy], but I was wondering how TotT compares to fishing for good condition with Strides. The two strategies are directly opposed, since both rely on using 'Good Condition', one for CP and one for quality.
Edit: Also once in a while Excellent shows up and I get over 1,200 quality in one turn. Those are good times.