what i do is grow my vines under chicken wire. i suspend chicken wire about 8 inchess off my soil level, this forces the plant to grow horizontally, maximizing my footprint. as the plant grows up through the wire, just pull it under and "train" it so it fills out the chicken wire.

im experimenting with 2 screens now. i will "sandwich" the plant in between 2 screens, 1 keeps it growing horizontally and the other nderneath supports developing fruits.

Indoors I grow smaller/dwarf heirloom varieties of tom's...I like to grow other vegies as well so doing a full size indoors isn't practical, at least for me. My "lucky
Leprachaun" is about 1' tall and is already producing loads of flowers....I'll have an aboundance of toms in a small space.....
Happy Growing