The general principles of arrangements for compensation for fishermen adversely affected by wind farm development have been discussed at length in the Fishing Liaison with Offshore Wind and Wet Renewables Group on which my Department, wind developers and the fishing industry are represented. The group, which includes a representative from the inshore fishing sector, has produced best practice guidance that can be found at
http://www.decc.gov.uk/en/content/cms/what_we_do/uk_supply/energy_mix/renewable/policy/offshore/groups/groups.aspx
This guidance includes an appendix dealing with issues concerning assessing the value of fishing activities and related compensation, disruption or displacement payments.