V up flexability

What other work should I be doing to ge more flexability for v ups ? 

This depends on where your weaknesses are. If you lack hamstring flexibility the Front Split course will help you with this. The iMs in the Manna progressions will also help you improve your hamstring mobility and compression  

Thank you . My hamstrings are tight.

Sounds like the Front Split series is your remedy  

Thanks for the help.