I'm really struggling to find a wetsuit to fit due to my size. Are you able to compete in a normal wetsuit rather than a tri one?? These are the only ones I can find that fit!!!!
Pretty sure you can wear whatever wetsuit you like. However, the issue will be with the thickness of the rubber, particularly around the shoulders. You may find you'll knacker yourself out trying to swim in a non tri wetsuit.
Not being funny but how big are you? And what have you tried on?