I have a 2530 with Volvo 5.7 L Duoprop.
Wind and the boat can be difficult. What usually is the kicker is wind, the boat and current.
Wind and boat orientation gets fixed by starting over versus forcing a bad situation. Wind, boat, and current require jockeying and help usually.
The boat won't turn on a dime. You have to either spin the wheel and shift and then when you are real close shift a lot. I decide within about 5 or 10 feet of whatever I am close to (the finger of the slip or the boats on either side) whether to call it off. I've been sideways against someone's bow pulpit before.
I've been on a slip for about 4 years now.
My fourth factor the past two years and I am not in the water yet this year is I don't have much water in front of the slip at low tide as there is a brook washing mud into what's left of dredged area.
Lastly, don't let people in the boat that are supposed to help, make it difficult for you by blocking your view and don't let them grab something you don't want them to grab. Don't be afraid even if someone on a finger has grabbed one of your lines to tell them to let go and try it over again.
If it works, I'll show you two photos from 2004 of it in a slip, I don't have a good one from last year.