Pruning for the first time - could use some pointers.

Hello all!

I'm getting ready to prune down some grapes on a trellis here at the home ibought a few years ago. they have never been pruned by me, and the old timer here before us died leaving the house vacant - 7+ years of pure wild growth.

https://scontent.xx.fbcdn.net/hphotos-xpf1/v/t1.0-9/10994342_10153111947755449_4100798303303860004_n.jpg?oh=4493fde667f1c3d741f39597ef043efd&oe=557215D8
roots/base of first of two plants.

https://fbcdn-sphotos-a-a.akamaihd.net/hphotos-ak-xpf1/v/t1.0-9/11012709_10153111947820449_6511139277048174128_n.jpg?oh=0f21684debb2643957801dc756d51d66&oe=557B3C6D&__gda__=1433466386_d052aa71c4deee2356822be315a18492
middle of first of two plants

https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-xfa1/v/t1.0-9/10603249_10153111947990449_2025321454423743308_n.jpg?oh=1350aa3df12f8bf30398ff44715f061d&oe=557C31DC&__gda__=1435852593_d1699c4e2218bb5fd632f3556e63a678
and the mass on top.

Currently i'm thinking i'm going to cut all but one main verticle, and see if there's viable branches that can be trained to the trellising that is there. is that correct?

https://scontent.xx.fbcdn.net/hphotos-xfp1/v/t1.0-9/1514595_10153111948380449_4378728167744145418_n.jpg?oh=0711f0bbb3ad97c309617d8deb08ab28&oe=5589B964
second plant, root/base

https://fbcdn-sphotos-e-a.akamaihd.net/hphotos-ak-xpf1/v/t1.0-9/11018110_10153111948435449_3291535730096890904_n.jpg?oh=ad3d863f271766132c320da19a1af5b2&oe=557CF9A6&__gda__=1434697689_e360f8525c08855a3232419d00bfa82d
middle of second (you can see a branch that was trained to one of the trellis wires)

https://fbcdn-sphotos-c-a.akamaihd.net/hphotos-ak-xfp1/v/t1.0-9/11037466_10153111948495449_4983952285633040840_n.jpg?oh=3bb9f85ff6a0a31bf9885e0bc48a545d&oe=557A2387&__gda__=1435367906_c1225220b5e55063707dcdaaf086c6bb
and the top disaster


To hedge my bet (pun intended) i'm working on cloning as well !

https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-ak-xpa1/v/t1.0-9/11025120_10153111948880449_7924948172297094397_n.jpg?oh=d4a92b498be04a9a00de39574eaf6570&oe=558DF081&__gda__=1434812823_7feb99cbb71748e9018e894b27287763
https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-xpa1/v/t1.0-9/1654445_10153111948940449_837151227980577333_n.jpg?oh=c983d2b6899edef69f58f3f2b18cfab8&oe=5579F984&__gda__=1433694524_f4b8d379e9d808c7b579466beaa914e4


Any, and i do mean any, comments advice ideas thoughts or random tidbits will be appreciated as i move forward with this project.

Where abouts are you located? Last year in my part of Indiana it got down to -17F and that wiped out many of the smaller vines sections. I was nice in that I didn't have to prune . If you're also in an iffy area, then you might want to wait until the buds start to swell so that you know the vines you are leaving are alive.

https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-xpa1/v/t1.0-9/16198_10153118474015449_943710382867402376_n.jpg?oh=6ae74448327d661f09bc7db08275ef25&oe=55B99B88&__gda__=1434981642_01cd317fa9442b5c6593f4173b8cf850

the deed is done. fingers crossed.