Usually the test custodian returns in January and has to play catch-up - but this time around he was able to start pre-season training in November for the first time since 2007.
"I'm quite enjoying getting some work and volume into my body, which I haven't been able to do over the last few years," Slater said.
"My decision was made for me with my shoulder but looking back now it's a blessing in disguise for the rest of my body.
"I'm feeling as good now as I've felt over the last three or four years."
Slater says the NRL must look at reducing the match schedule, which can include World Club Challenge, All-Stars, Nines, State of Origin and Test matches on top of the usual NRL season plus finals.
This year's long list of injury withdrawals from the Australian Four Nations team is evidence of the toll such games are taking.
"Certainly something should be done," Slater said.
"I think the season's probably too long in itself and then you add all of the other extras on to it and it's a really long season.
"With television rights we're bound into contracts where we can't reduce the amount of games we're playing at the moment but I think with the next deal it's something that we really need to look at."
Slater said he was open to playing four 25-minute quarters as a trade-off to the broadcasters. AAP