Fuller scored only his second league goal of the campaign last weekend - a superb winner against West Ham at Upton Park - after stepping off the bench.
Pulis said: "Ric had a little bit of food poisoning before the game but you know when the game opens up he can kill teams.
"He does the type of things the only top players can do. The biggest complement you can pay him is that he can beat people and can create things by himself.
"He doesn't need any help. He is a very exciting player and a very committed player. It is the way he likes to play.
"To be honest you just do not know what you are going to get from Ric from day to day. He is that type of player.
"The disappointment is he has only two league goals, seven altogether if you include the cups, when he's had a better season.
"He has become more of a team player. I know in the last seven games he will be looking to improve that tally."
Ryan Shawcross remains doubtful for Saturday's clash with Hull after missing the West Ham match with an ankle injury, while Abdoulaye Faye and Dave Kitson suffered knee problems in the game.
Meanwhile Harry Redknapp, Mick McCarthy and Martin O'Neill as well as Hull chairman Adam Pearson have promised to back Pulis in his charity climb up Mount Kilimanjaro (www.kiliforkids.org.)