A shorter tie would definitely help, if you can find them. My problem is that 'normal' length ties are almost too long just for normal wearing with trousers. With a kilt, they're way too long. So I have to tie it so the front is correct, but the tail is hanging ridiculously long. I just tuck it into my kilt, or put it into the shirt placket between the buttons. Some guys also just tuck the whole tie into the kilt, which isn't done with Saxon style dress but seems to be acceptable with kilt -wearing.