I my mind, there is no other option besides the Sig Hog Bipe. Very easy kit to build, easy to set up and a great flyer. Flys good on anything from .60-.90. I have had the most fun with a .91 4-stroke on them.

You can modify the tail surfaces into just about any shape you want, big and round for the 1930s style bipe, or sharp angles for a more modern homebuilt style bipe. I have built one that looks like a stearman, and I added a turtle deck and coke bottle canopy for more of an ultimate style bipe. Some guys add cowls to them too.

In other words, you just can't beat the Sig Pig!!!