All these jig hooks are available in smaller sizes:
Dohiku:
https://www.detteflies.com/dohiku_j
Daiichi 4640:
http://hareline.com/d4640.html
Daiichi 4647:
http://hareline.com/d4647.html
Hends:
http://troutlegend.com/store2/index....product_id=169
Knapek:
http://troutlegend.com/store2/index....product_id=140
Hanak (all of the competion jig hooks are available through Umpqua):
http://www.performanceflies.com/product-p/h-470bl.htm
PT/TB