The 28-year-old penned a one-year deal last Friday following a three week period with the Iron which had seen him train right from the start of pre-season and impress in the friendly victories over Barton Town and Burton Albion.
He told iFollow Iron: "I've enjoyed it. The lads have been excellent and really welcoming. I'm looking forward to getting the season going now and hopefully we can get plenty of wins and have a good season.
"I came in for the first day of pre-season and it's been one of the toughest I've done, which is a good thing. I've enjoyed it. They don't get any easier but it's been enjoyable and it gets you fit and excited for the season as well.
"Pressing is something we've worked on in training and hopefully when the season starts we can do that for 90 minutes and really get on top of sides, putting them under pressure."
Bunn has made over 200 senior career appearances and made his mark at Championship and League One level for the likes of Huddersfield Town, Sheffield United and Bury.
The versatile forward player was at York City last season after leaving Scottish Premiership side Kilmarnock, with both periods affected by campaigns being curtailed due to the COVID-19 pandemic.
He said: "The main reason I went to York was to play games but unfortunately that ended quite early. I enjoyed my time there though and it's a good football club.
"The key thing now though is looking forward to this season and helping Scunthorpe.
"I want to be playing in the EFL and have played against Scunthorpe in the past, and know it's a good club where the fans get behind the team and I can't wait to play in front of them for the first game of the season (against Swindon Town).
"I think we have good characters in the changing room and backroom staff. and there's a real good togetherness there. If we stick together and implement the ideas we're working on, we'll be good to go.
"I spoke to Bhuna (Mark Lillis, who was part of the coaching set-up during his time at Huddersfield Town) in the summer and he played a part getting me here to train. Both he and the gaffer have been honest with me since day one and that's all you can ask for as a trialist. You want to come in, work hard and see where it leads to."
Reflecting on Tuesday night's friendly against last season's League One play-off finalists Lincoln, which ended in a 2-0 win for the Imps, he added: "There's always room for improvement. It's pre-season for a reason and more about building that fitness up. I'm sure come the first day of the season all the boys will be ready to go.
"They're a good side and probably a game ahead of us in terms of fitness and sharpness, and that showed as well.
"Again though, it was a good test for us and I think we showed some good glimpses of what we could do.
"They've all been good tests for us and at the end of the day it's pre-season, about building our fitness up and implementing ideas from the training ground into games.
"We are showing glimpses and hopefully in the next game leading into the season we can do it for 90 minutes and hopefully hit the ground running.
"The gaffer will want the lads to get 90 minutes under their belt, and AFC Wimbledon away (this Saturday) is a good test for us again. We'll go there and do what we can to win that game."
See much more from Harry Bunn on iFollow Iron.