[VHFcontesting] Contesting differences: VHF and HF

[Chet, N8RA]

Sometimes in discussions on this contesting reflector I've seen statements
of "like HF'ers" and I do not know what that means. 

Can someone explain to me what is implied by that term so that I can better
appreciate the reference?
Some specific examples of the differences would be quite helpful. 
Off-line is OK, and if so, I will respect your confidentiality. 

Thanks and 73,

Chet, N8RA