The three female judges he has confirmed are Nicky Thompson, Jackie Sarginson and Pip Wilson.
Tisdall said although historically the dog trialling sport had been dominated by men, women were showing up at both island and national level and some had achieved some excellent success.
"I judged a run-off last year which had three women all in the one run-off — which is quite unique.
"It's been quite impressive to see some of those women run a dog, actually.
"Women dog trialists don't tend to have the same manner with their dogs like us blokes do. They're a bit quieter, I guess you'd say".
Tisdall said he had "no problem" filling the fourth position with a male judge but was open to a last minute shift around if a viable female judge "came out of the woodwork".
While an all-female, or mostly all-female, judging line-up might encourage a bigger turnout of women new to the sport and keen to have a go at a maiden course, Tisdall did not think it would boost the club's turnout any more than previous years.
"I doubt it would make too much of a difference to be honest — men and women are very much on an even footing when it comes to dog trialling".