But Ben Galea dragged the visitors back into the game when he went over just before half-time.
"There hasn't been as much premium placed on tracking than there has been on implementing treatment, " Galea said.
The Robins started brightly as Ben Galea, Ben Fisher and Peter Fox crossed with Michael Dobson adding the extras.
"He (Galea) never gave me HGH or any PEDs (performance-enhancing drugs), " Woods insisted.
Ben Galea was the man to profit most, running in two late scores after good work again by Cooke.
But, despite Ben Galea pulling Hull KR level again, Clinton Schifcofske's sixth goal gave breathing space before Luke Dyer's late, clinching try.
Michael Dobson and Ben Galea restored the home lead by half-time, only for Luke Dorn and Lee Mitchell to again redress the balance.
But as the first half wore on Hull KR established a foothold and got their first try thanks to Galea's side-step and surge over the line.
But the Robins regained the lead with quick tries from Clint Newton and Ben Galea, the latter capitalising on a horrible mistake from Warrington full-back Richie Mathers.
While Woods admitted he had worked with controversial Canadian doctor Anthony Galea, now the subject of federal investigations in his home country, he vehemently denied ever taking HGH.
Rovers brought in centre Kris Welham, who has been out of action for two months with a shoulder injury, while forward Ben Galea was back after an eye problem.
Galea was the man Woods went to because "he's worked with so many athletes (and) there's a certain comfort level to that when a person has worked with athletes".
They took the lead when Blake Green's delayed pass put Webster over, with Sheriff marking his debut with a try after Galea and Ben Cockayne combined well on the left.
Galea said that the two departments have been under quite a bit of pressure to get programs up and running to deal with the growing number of vets with PTSD.
Schifcofske each time kept up his record with the boot but Rovers hit back again when Galea drove over from a couple of yards and Dobson's fourth conversion levelled the match.
Walker's injury, after he went down awkwardly in a tackle with Senior, was a cruel blow with Shaun Briscoe, Ben Galea, Scott Murrell, Ben Cockayne and Jake Webster already absent for the Robins.
They made their displeasure public in 2010 when they said they never authorized Rodriguez to be treated by Dr. Anthony Galea, who said he prescribed anti-inflammatories to A-Rod following the first hip operation.
It was the cue for the Robins to move up a gear as Galea's sharp switch in direction and hand-off got them off the mark on seven minutes and handed Dobson an easy conversion.
Hall crossed the line again but fumbled the ball in the grounding before Cockayne brilliantly latched onto a grubber from Galea to ensure a fourth game without defeat for Hull KR - and sixth place in Super League.
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