Vajrasana includes Kapotasana via an Ushtrasana subroutine and Laghu Vajrasana. The big asanas of the Bow sequence are Viparita Salabhasana and Gandha Bherundasana.
These two asanas come at the end of the sequence. You lead up to them via Bhujangasana (cobra) and Salabhasana (locust) subroutines. This is similar to the gradual build up towards Kapo in 2nd series Ashtanga. Typical of Vinyasa krama, though, there are several hand/arm variations. In the Salabhasana subroutine the right arm/left leg are lifted and then switched, followed by both legs raised and the arm variations, stretched out in frount of you, fingers clasped behind the neck, reverse prayer and outstretched to the side.
In Vinyasa Krama the hands are clasped as opposed to Ashtanga where they lay parallel to each other along the mat. Gandha B is still way beyond me but I couldn't help a little nod in it's direction with the wall to fall back on. Long way to go but I can clasp my heels in kapo so surely it should be doable.
Ganda B is one of those asanas that should probably come with a 'don't try this at home' health warning. There's the fear of shifting too much weight forward as you take your legs over and flipping over while your head stays where it is, this would be bad. But that's what the wall is for, also one of Boodie's tips is to use the wall to push your hips back. As with the drop back work it's probably a case of working on the point of balance, shift the hips back so you can take your legs a little further over, back a bit here forward a bit there.