Mr McCubbin lived with his wife and her 67-year-old father for five years before he died from prostate cancer in March 2012.
As a volunteer for the Dig Deep campaign this month, Mr McCubbin said his father-in-law inspired him to volunteer with the Cancer Council.
�Towards the end of his life, we always watched the footy together and that was always something we shared. That�s how I got into volunteering with Dig Deep and also Run for a Reason,� he said.
Mr McCubbin said he sold wristbands to raise money before and during game breaks in August last year.
�Last year, I ran out of bands and had to sell them off my wrist. We had 10-year-old kids come up who had saved their pocket money to buy them,� he said.
Working full-time as a commercial estimator with two kids under six, Mr McCubbin said he did not have a lot of spare time.
He said fundraising or volunteering was not necessarily about giving financially.
�Before I got involved in a charity I never thought if I gave 3� hours a couple of times a year, the time I gave allowed Cancer Council to raise more money,� Mr McCubbin said.
He said he would raise his kids to be West Coast fans.
�My son is into superheroes at the moment and he asked why West Coast doesn�t like Fremantle. I said �Oh they�re the villains�,� Mr McCubbin said.
Cancer Council WA is aiming to raise $100,000 through the campaign this year.