TMSH Transactions via Plink

You're best bet will probably be to use TMSH scripts:

https://devcentral.f5.com/wiki/TMSH.Commands.ashx

So a basic example might look like this:

tmsh create cli script transact-script

which creates and opens the script for editing:

create script transact-script {
proc script::init {} {
}

proc script::run {} {
    tmsh::begin_transaction
    tmsh::create ltm pool [lindex $tmsh::argv 1] members replace-all-with \{ [lindex $tmsh::argv 2] \}
    tmsh::commit_transaction
}

proc script::help {} {
}

proc script::tabc {} {
}
}

And then you can then remotely execute this script (with command arguments):

ssh root@bigip 'tmsh run cli script transact-script foobar-pool 10.10.10.10:80'

Where [lindex $tmsh::argv 1] and [lindex $tmsh::argv 2] consume the command line arguments "foobar-pool" and "10.10.10.10:80" respectively.