I think I also tried to answer this elsewhere, but here it is again--
Every organization/breeder group seems to have their own rules as far as what is or isn't "Foundation", and I know nothing about how Rocky Mountain groups do that. Strictly on a *pedigree* basis, I can try to calculate relatedness to Tobe for you.
Parents are each potentially 50% of the subject horse, grandparents each 25%, gr.grandparents 12.5%, gr. gr. grandparents 6.25%, gr.gr.gr. grandparents are 3.125%, gr.gr.gr.gr. grandparents are 1.5625%, and so on.
Based on the allbreedpedigree link you shared, your horse has Tobe 2x as a gr.gr. grandparent, 5x as a gr.gr.gr. grandparent, and 3x gr.gr.gr.gr.gr. grandparent.
If my figgerin' and math is right, that would make him right around 30.5% Tobe.....?