A 4btv trap vertical or the like would be a different matter, requiring some
fiddling. A Yagi and (or) G5RV would require a minimum of fiddling. A
ladder line fed homemade G5RV in inverted vee would be the least expensive I
could think of. A used 3 element Yagis can be cleaned up and re-used
later..

The trap vertical that was mentioned would probably be a real hassle to
tune-up on the tower.