What kind of fish are you fishing for? Are you trolling? Bank fishing?
I'll give you my $4,000 purchase experience that I'm still dealing with!
Got a 1987 Champion Bass boat 2 years or so ago, and it's been a money pitOf course, the jerk I bought it from swindled me, I won't go into it no need to, but point is keep in mind the type of boat you want, is $4,000 feasibly going to give you that type of boat that won't require an additional $1000 worth of work a month later...
The positive side to my boat is I've sure learned a lot of stuff (a lot from this forum, thanks!) so my next "used boat" will have a more informed owner.