Yetton, 27, put pen to paper during the club’s end-of-season awards function at the Bob Lucas Stadium on Saturday night after becoming a free agent the day before.
King had hoped to bring the former Truro City striker to Weymouth some six months ago but Yetton sustained a serious knee injury, consequently delaying his arrival from Treyew Road.
The ace marksman played for the Terras while on-loan from Plymouth Argyle nearly a decade ago and is the Cornish club’s all-time record scorer with 226 goals in 315 appearances.
He helped play a pivotal role in Truro’s climb up the football ladder to the Blue Square Bet South but his career there ended on a sour note when he was suspended following a training ground bust-up which left team-mate and ex-Terra Ben Gerring with a broken jaw.
King said he couldn’t condone what happened but added that the incident had no effect on his desire to bring Yetton to Weymouth.
The Terras’ chief was unable to hide his delight at the new addition to his squad.
“Stewart’s a quality player and a proven goal scorer,” King told Echosport. “He can play in a variety of positions as well.
“I’ve been trailing him for a long time now. We tried to bring him in earlier in the season but he got injured.
“You look at his goal scoring record and it’s phenomenal and if we can give him the service he will score goals.
“He’s the right age and I’m over the moon we got him.”
On Yetton’s qualities and what such a signing signifies, King added: “Stewart is fully committed, gives 100 per cent, and would run through a brick wall for you.
“He wears his heart on his sleeve and he has got the lot.
“What I liked about Stewart when I first spoke to him was his desire to play for this club.
“He knows a few of the lads here and they’ve spoken to him and told him what a great club it is and how it’s run now.
“I wanted him in earlier so he could kick us on. Unfortunately, that didn’t happen but I can’t wait to get him in now.
“A two-year deal shows our intent and he wanted that as well. He didn’t want to be a one-year wonder and then go somewhere else.
“It’s not about chasing the money; it’s about being comfortable and happy in himself and playing football.
“He’s had some tremendous years at Truro and he’s done an awful lot but it was time to move on and he’ll be a massive signing for us.
“I’m delighted he’s on board and signing a player of that calibre shows our intent.
“You can’t rest on your laurels and when decent players become available you’ve got to be in the market for them.”
King also revealed that he might not be too far away from bringing in another new face to the club.
In the meantime, Yetts tweeted to Truro Fans:
"Extremely sad to say goodbye to Truro City FC. A massive thank you and sorry for not being able to leave on better terms", and, "many thanks! A privilege to have played for such a great club"