Croke Park is one of Europe's most impressive stadiums

He said that to abandon Rule 42 would be disastrous for the Association.

Two years ago the Blessington clubman slammed Presidential candidates for backing a proposed change to allow other sports to use Croke Park.

Boothman has again written a letter to all elected GAA leaders outlining his reasons for resisting a change.

Stadium blueprint unveiled

''The main reason being put forward to open Croke Park is based on the financial benefits which supposedly would accrue to the association,'' he said.

''No figures have been mentioned to support this argument. Surely you people are entitled to know what exactly the benefits are before taking such a mammoth leap into the unknown.

It will prove to be the most disastrous decision in our history. Jack Boothman

''The other aspect of opening Croke Park which must be considered is the financial aid it will offer to our keenest rivals.

''Rugby and soccer operate worldwide in a blaze of publicity and hype. And as an association, we are unable to compete.

''Everywhere we look rugby and soccer are making inroads into the areas we would have considered our own.

''It seems to me that to offer our keenest rivals our prime marketing asset and financial assistance as well is ludicrous in the extreme, and if such a decision is taken, it will prove to be the most disastrous decision in our history.''

Boothman's remarks come on the back of the unveiling of a blueprint by the IRFU and FAI to redevelop Lansdowne Road.