Have you considered trying something not quite so big?
My other half is 6ft2 and shall we say.... chunky.... but the 15.1hh cob I ride happily carries him and he doesnt look underhorsed.
(When I say cob.... he is amost as wide as he is tall! But he is always full of energy, loves jumping etc.. not a plod!)
I am nearly 6ft myself, and often feel too big - as if my legs are dangling under the horses belly - even the 16.3 I ride! But I feel about right on this cob! (Except when I get off and hit the floor much sooner than I expect to!!!)
HI and thanks for all your posts, im specifically looking for a heavy horse, i want to ride and drive and get into heavy horse showing, im looking at a percheron Mare on Sat.
St Bernard, thanks for your posts, i have phoned a few.